Shopify Partner · Shopify Plus builds, upgrades and B2B since 2014

The Shopify Plus Agency for B2B, ERP and Multi-Store Brands

Q: How long does a Shopify Plus build or upgrade take?

An upgrade from standard Shopify usually takes about four weeks. New Plus builds and migrations from other platforms take four to eight weeks, longer when an ERP integration has to be built on both sides. The Ardon store, with its ERP integration, took six weeks of development.

Q: Will our store go offline or lose rankings during the upgrade?

No. The current store keeps selling while we build on staging, and the cutover happens in a low-traffic window and takes minutes. Every URL is mapped with a 301 redirect and metadata and structured data are carried over, then we monitor rankings daily for 30 days.

Q: Do you work with brands outside Serbia?

Yes. Most of our Shopify Plus clients are in the EU, the UK and the US. We work in English and Serbian, in Central European Time, with a single point of contact from the Discovery Workshop to launch and beyond.

Q: Do you offer Shopify Plus support after launch?

Every launch includes 30 days of support, training and monitoring. After that most clients keep a retainer for new features, CRO and integrations, billed only for the hours used each month.

Presta is a Belgrade-based Shopify Plus agency that builds, upgrades and runs Plus stores for B2B wholesalers, DTC brands and multi-store groups across the EU, the UK and the US. Checkout extensibility, Shopify Functions, native B2B, ERP integration and multi-store setups, delivered in fixed phases from 15,000 EUR.

Book a 30-Minute Plus Call See Client Results

Fixed Phases, From 15,000 EUR

ERP and B2B Specialists

Zero Downtime Launches

Results before the woocommerce to shopify migration

Results after the woocommerce to shopify migration

32%

Lower cart abandonment six weeks after launch (Ardon)

Source:
Ardon

45%

Faster checkout completion (EP Flies)

Source:
EP Flies

54%

Faster page load after relaunch (Saruna)

Source:
Saruna

Orders or customer records lost on any launch we have run

Upgrading to Plus or outgrowing standard Shopify? We take on two Plus projects a month, so book early.

Book a 30-Minute Plus Call See Client Results

Shopify Plus Agency Services

A Shopify Plus agency has to cover the whole enterprise surface, not only the storefront theme. These are the four engagements we run most often, and what each one involves.

Live Demo: Showcasing benefit of 4

Click any benefit to explore

Benefits 1 / 4

Performance Metrics

Plus Builds and Upgrades

Shopify Advantage

WooCommerce

4 weeks Typical upgrade from standard Shopify

4 to 8 Weeks

Shopify

4 to 8 weeks Typical new Plus build

Improvement Progress

4 to 8 Weeks

Business Impact

New Plus stores and upgrades from standard Shopify

Plus Builds and Upgrades

New Shopify Plus stores and upgrades from standard Shopify or from another platform. Custom Online Store 2.0 theme on your brand, expansion stores for new markets, Shopify Markets and multi-currency, and the data migration when you are coming from WooCommerce, Magento or a custom build.

1 of 4

Checkout and Shopify Functions

Checkout UI extensions for branding, custom fields, trust elements and post-purchase offers, and Shopify Functions for discount, delivery, payment and validation rules.

2 of 4

B2B and Wholesale

Native Shopify Plus B2B: company accounts with several buyers, catalogs and price lists per customer group, net payment terms, quantity rules and a wholesale storefront, without a second system to maintain. For EP Flies that meant wholesale and guide price tiers and case quantities in multiples of six.

3 of 4

ERP and Multi-Store Integration

Two-way ERP integration for catalog, stock, orders and fulfilment status, built as one Shopify app that serves every store in a group. Plus agentic commerce readiness for AI shopping agents.

4 of 4

Industries We Build Shopify Plus Stores For

Most of our Shopify Plus work sits where catalogs are technical, pricing is layered and an ERP owns the data.

Workwear, Safety and Industrial

ERP-driven catalogs with deep variant logic, technical specifications as the interface, and stock from more than one warehouse. Ardon and Metalne Police are here.

ERP-integrated catalogs
DTC Fashion and Lifestyle

Fast themes, size and colour variants at scale, Shopify Markets for EU expansion, and checkout extensions that lift conversion without app bloat.

Speed and conversion
Sporting Goods, Toys and Kids

Seasonal peaks, bundles, gift cards and loyalty, and wholesale for guides, clubs and resellers. EP Flies runs retail and wholesale from one Shopify store.

Retail plus wholesale

Free Shopify Plus Resources

Shopify Plus Guides

Top Shopify Plus Agencies 2026: 10 Enterprise Partners Compared

TL;DR Best for B2B, ERP-integrated and multi-store brands on a fixed price: Presta (Shopify Plus builds from 15,000 EUR; we publish this list). Best for subscription and…
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WooCommerce to Shopify Migration SEO Checklist: Before, During and After

TL;DR Moving a site from WooCommerce to Shopify risks losing organic traffic and rankings. Use a prioritized post-migration checklist covering redirects, content parity, and…
Read More
Shopify migration made easy: A step-by-step plan for custom ecommerce stores

TL;DR Founders face risky, resource-heavy Shopify migrations that can harm SEO and revenue Follow a step-by-step plan with technical mapping, risk controls, and a partner who…
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Why Choose Presta?

A Shopify Partner in Belgrade, building and running Shopify stores for brands in the EU, the UK, the US and Australia since 2014.

Plus Delivery Specialists

One senior team for strategy, design, Liquid and app development, and integrations. Every launch is rehearsed on staging before cutover, and you talk to the people who build it.

Zero Failed Launches
Fixed Phases, Fixed Prices

Work is scoped in a Discovery Workshop and delivered in fixed-price phases. After launch, a retainer billed only for the hours used each month.

No Estimates That Drift
SEO Preservation Protocol

Full URL mapping, 301 redirects, metadata transfer, and structured data rebuild. Rankings protected through the switch.

Zero SEO Loss

Ardon

Marketing manager

Ardon

32%

Cart abandonment reduction
6 weeks

Development Time

Shopify, ERP catalog and order sync, WSPay and Corvus Pay

ERP-Integrated D2C Store in 6 Weeks

Creating our brand new fully automated and ERP integrated D2C store was a breeze with Presta. They were always one step ahead and guiding us through the process.

EP Flies

CEO

EP Flies

45%

Faster checkout completion
18%

Increased store conversions

Ecwid and WooCommerce to Shopify, B2B price tiers

Retail and Wholesale on One Store

Our WooCommerce contained product information, while we had orders and customer data on Ecwid side. Presta team was able to migrate all our data, make shopping much more seamless and package everything into a beautiful store that we are proud of.

Saruna

Head of Digital

Saruna

0 minutes / month

Average downtime
54% faster

Page load after migration

Shopify build and ongoing retainer

Long-Term Shopify Partner

Presta is a long-time partner that has proven to be able to answer to any business needs we have.

How Our Shopify Plus Agency Prices Work

Discovery Workshop

Two to three working sessions on your catalog, integrations, B2B rules and markets. You leave with a written architecture, a phased plan and a fixed price for each phase.
Plus Build or Upgrade: From 15,000 EUR

Fixed price per phase. Upgrades from standard Shopify start at 15,000 EUR; builds with ERP integration, B2B and several markets typically run 20,000 to 45,000 EUR. Standard Shopify stores start at 5,000 EUR.
Retainer: From 50 EUR per Hour

Ongoing development, CRO and support after launch. 50 EUR per hour for clients in Serbia and the region, 70 EUR per hour internationally, billed only for the hours used each month.

Free Shopify Plus Readiness Checklist

Get the checklist our team uses to evaluate whether a store is ready for Shopify Plus. Identify blockers and quick wins before you commit.

App and integration analysis
SEO preservation guide
Data integrity checklist

Discover and Plan

Discovery Workshop with your team
Map apps, ERP, B2B rules and markets to Plus
SEO, traffic and conversion baseline
Fixed price and dates for every phase

Build and Integrate

Plus store, theme and expansion stores
Checkout extensions and Shopify Functions
ERP, PIM, payment and shipping integrations
B2B companies, catalogs and price lists

Migrate and Test

Products, orders, customers and content
Redirects, metadata and structured data
Record-by-record validation on staging
Your team signs off the staging store

Launch and Grow

Cutover in a low-traffic window
Daily SEO, analytics and order monitoring
Team training and 30-day support
Retainer for CRO and new features

25+

Shopify stores built and migrated since 2014

Orders or customer records lost, ever

4.9/5

Average client rating on Clutch

Fixed price honoured on every project. No hourly estimates that drift.

What does a Shopify Plus agency do?

A Shopify Plus agency designs, builds, migrates and runs stores on Shopify Plus. At Presta that covers the theme, checkout extensibility and Shopify Functions, native B2B, ERP and PIM integration, expansion stores for new markets, and development and CRO after launch.

The difference from a general Shopify agency is the enterprise surface: integrations, B2B rules and several stores that share one set of data.

Is Presta a certified Shopify Plus agency?

Presta is a Shopify Partner, not a member of the Shopify Plus Partner program. We build, upgrade and run Shopify Plus stores for our clients, and we will show you the stores, the integrations and the results before you decide.

If a listed Plus Partner badge is a hard requirement for your procurement, tell us on the first call and we will say so honestly.

How much does a Shopify Plus agency cost?

Our Shopify Plus builds and upgrades start at 15,000 EUR, and builds with ERP integration, B2B and several markets typically run 20,000 to 45,000 EUR, in fixed-price phases agreed after a Discovery Workshop. Ongoing work is a retainer from 50 EUR per hour in the region and 70 EUR per hour internationally.

The Shopify Plus plan itself is paid to Shopify: from 2,300 USD per month on a three-year term, or 2,500 USD on a one-year term, with a variable fee at high volume.

How long does a Shopify Plus build or upgrade take?

Do we need Shopify Plus, or is standard Shopify enough?

Plus earns its fee when you need checkout extensibility, native B2B, several expansion stores or higher API limits for an ERP. Most stores under a few million in annual revenue without B2B do well on standard Shopify with a custom theme, and can upgrade later without another migration. See our Shopify agency services for that route.

Can you integrate Shopify Plus with our ERP?

Yes. We build catalog, stock, order and fulfilment sync between Shopify and the ERP, usually as one private or public app that serves every store in a group. For Ardon, catalog and stock come from the ERP on a short interval with a nightly full sync as a failsafe, and orders flow back into the ERP.

Will our store go offline or lose rankings during the upgrade?

Do you work with brands outside Serbia?

Do you offer Shopify Plus support after launch?

Our Ironclad Guarantees

Zero Downtime Promise

Your store keeps selling through the entire upgrade. No lost sales, no frustrated customers.
Zero Data Loss

Every product, order, and customer record validated before launch. Complete or we do not cut over.
30-Day Support Included

Daily SEO and performance monitoring plus full team training after launch.

Tell us where your store is today and what has to change. We will reply within 48 hours with a written view on Plus versus standard Shopify, the integrations involved, and a price range for each phase. If Plus is not the right move yet, we will tell you.

25+ Stores

Built and migrated since 2014

4 to 8 Weeks

Typical Plus build

From 15,000 EUR

Fixed price per phase

Tell Us About Your Store

What You'll Get

Platform-Specific Audit

Data, integrations, and SEO risk review of your current store

Fixed Quote & Timeline

Exact price and week-by-week plan, no estimates that drift

Straight Answers

If Plus is not right for you yet, we will say so

Creating our brand new fully automated and ERP integrated D2C store was a breeze with Presta. They were always one step ahead and guiding us through the process.

Ardon

Marketing Manager

Migration ROI Calculator

Your Migration Investment Pays Off In

Projected Annual Increase

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The Shopify Plus Agency for B2B, ERP and Multi-Store Brands

What a Shopify Plus Agency Should Deliver

Shopify Plus Agency Services

Plus Builds and Upgrades

Industries We Build Shopify Plus Stores For

Workwear, Safety and Industrial

DTC Fashion and Lifestyle

Sporting Goods, Toys and Kids

Free Shopify Plus Resources

Shopify Plus Guides

Top Shopify Plus Agencies 2026: 10 Enterprise Partners Compared

WooCommerce to Shopify Migration SEO Checklist: Before, During and After

Shopify migration made easy: A step-by-step plan for custom ecommerce stores

Why Choose Presta?

Plus Delivery Specialists

Fixed Phases, Fixed Prices

SEO Preservation Protocol

How Our Shopify Plus Agency Prices Work

How a Shopify Plus Project Runs

Proof, Not Promises

Frequently Asked Questions

Our Ironclad Guarantees

25+ Stores

4 to 8 Weeks

From 15,000 EUR

Tell Us About Your Store

What You'll Get

Platform-Specific Audit

Fixed Quote & Timeline

Straight Answers

Get Your Pre-Migration Checklist

Register for Migration Workshop