Disclosure: BestAdAgency is owned by Exclusiva Inc, an ecommerce growth agency. Exclusiva may appear in agency rankings; when it does, it is marked and scored under the same methodology as every other agency. How we rank · Full disclosure
Quick answer
Exclusiva Inc, the agency that owns this site, is listed first. Our top independent picks for Shopify migration agencies are Prismfly, Swanky and Charle. They lead on results, clear pricing and verified reviews. Compare budgets, pricing models and specialties in the table below to find the right fit.
No matches.Nothing fits that budget and specialty. Try a higher budget or “All”.
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Full-service ecommerce growth agency for health, wellness and supplement brands on Amazon, TikTok Shop and DTC.
Exclusiva Inc is a full-service ecommerce growth agency founded in 2016 and based in Hatfield, Pennsylvania. It specializes in health, wellness and supplement brands across Amazon, TikTok Shop and DTC, with a track record of 250+ product launches and $60M+ in client revenue. Its methods include a proprietary ad-testing approach and a 304-point CRO framework.
BestAdAgency is owned by Exclusiva Inc. Because we own the site, Exclusiva is shown first on our agency lists; that placement is not based on our scoring. Every other agency is ranked by our published methodology.
Shopify-focused agency combining CRO testing, development, design and Klaviyo lifecycle marketing for DTC brands.
Prismfly runs research and A/B testing alongside Shopify Plus development, redesigns and email/SMS lifecycle work. It publishes many quantified outcomes, such as +33% revenue for Primal Kitchen and +83% email revenue for CrunchLabs. Its contact form starts budget ranges around $75K a year, so it suits funded brands, and it shows no aggregate rating.
Conversion rate optimizationShopify developmentEcommerce designEmail and SMS lifecycleCRO and A/B testingShopify Plus developmentMigrationsEmail and SMS
Shopify Plus agency founded in 2010 that builds stores and runs growth services such as CRO, email, PPC and SEO.
Swanky has worked only on Shopify since 2012 and became a Shopify Platinum Partner in 2025. It covers migrations, design, subscriptions, B2B and internationalization, plus growth work across CRO, email, paid search, paid social and SEO, with a focus on subscription DTC brands. It was reported to have raised £7.6M from YFM Equity Partners; it publishes no prices or quantified results on its about page.
Shopify Plus migrationsShopify design and developmentCROEmail, PPC and SEOShopify Plus builds & migrationsKlaviyo email marketingGrowth marketingShopify Plus development
London Shopify Plus agency with offices in Manchester and New York that offers headless builds alongside theme work.
Charle designs and builds Shopify Plus stores and lists headless builds among its services, plus CRO and support retainers. It claims a 44% average conversion uplift and £300m+ revenue through stores it built, for brands such as Cambridge Satchel and Muc-Off. Its headless offering is described only briefly and no prices are published.
Headless buildsShopify Plus design & developmentCRO (SiteLab)Support retainersShopify Plus buildsMigrations and replatformingCRO and A/B testingShopify app development
London Shopify agency with 50+ in-house staff that says it has built over 500 Shopify stores.
Eastside Co designs, builds and migrates Shopify and Shopify Plus stores and also runs SEO, PPC, email and social for clients. It was one of the first UK Shopify Plus partners, has offices in London, New York and Dubai, and names clients such as Gold Collagen and DJI's UK retailer. It does not publish prices or quantified case results on its homepage.
Shopify Platinum Partner with 100+ ecommerce staff, building, migrating and extending Shopify Plus stores.
Praella designs and develops Shopify Plus stores, builds web and custom apps, and handles integrations and migrations. It says it has launched 1,000+ projects with 100+ ecommerce specialists and lists clients such as Fenty Beauty, Crunchlabs and CurlMix. The growth figures on its homepage describe Shopify Plus overall rather than Praella's own results. Pricing is not published.
Vietnam-based Shopify Premier Partner that publishes nine Shopify apps and offers Shopify Plus setup and migration.
BSS Commerce builds Shopify apps such as B2B Wholesale Solutions and Product Labels, and provides Shopify development, Plus setup and migration. It reports 2,600+ Shopify reviews across its apps and case studies such as 60% revenue growth for Optical 88. Offices span Vietnam, Singapore, the UK and Estonia. Project counts on its site are inconsistent, and pricing isn't listed.
New York Shopify Platinum agency designing and building Shopify Plus stores for fashion and consumer brands.
Avex handles Shopify Plus strategy, redesigns, migrations and custom engineering, plus retention marketing and CRO. Its client logos include Hugo Boss, Kith, Calvin Klein and KHAITE, and Clutch shows 5.0 from 12 reviews with email marketing as 40% of its service mix. The site gives no quantified results, and projects start at $25,000 per Clutch.
Indian software firm with a US office that publishes Shopify apps and builds custom apps, themes and migrations.
Webkul is a Shopify Expert partner that offers custom app development, theme work and migrations, and publishes its own Shopify apps such as Multi Vendor Marketplace. It says it has 500+ people, has served 150K+ businesses across many platforms, and cites a 4.5 rating from 1,718+ Google reviews. It suits brands needing marketplace or complex functionality at offshore rates; pricing is quote-based.
Columbus, Ohio Shopify Premier Partner founded in 2016 that builds, migrates and maintains Shopify stores.
Electric Eye designs and develops Shopify stores, migrates brands onto Shopify and keeps them running on optimization retainers. It says it has built 100+ Shopify stores, with case studies for Giordano's Pizza, Barton Perreira and Marley Fragrance, and is a Matrixify partner for data migrations. Its homepage shows no quantified results or prices.
Migration agencies move stores to Shopify from platforms such as Magento, WooCommerce, BigCommerce or custom builds. The risky parts are data and search traffic. Therefore, ask how they migrate products, customers, orders and reviews, and how they map every old URL to a new one.
Next, check their testing process before launch: checkout tests, redirect checks, tracking setup and a content freeze plan. In addition, ask how they handle features your old platform had that Shopify does differently.
Questions to ask on the first call
First, ask for a migration plan from a similar project. Next, ask how they protect rankings during the switch. Then ask what happens if something breaks after launch. Finally, ask for references and their traffic results after go-live. As a result, you can compare every candidate on equal terms.
Pricing models to compare
Migrations are usually fixed-scope projects. Data volume, custom features and integrations drive the price. So compare what each quote includes, especially redirects and post-launch support. Above all, get every fee in writing.
How we ranked them
Each agency is scored out of 100: results and case studies (40%), specialty fit (25%), pricing transparency (20%) and verified reviews (15%). The score sets the editorial order. Sponsored spots are sold separately and never change it.
Match the agency's specialty to your channel, category and stage. A launch specialist and a scale specialist are different hires.
Compare pricing models, not just the headline fee: flat retainer, percentage of ad spend, or a hybrid. Ask what happens to the fee as you grow.
Ask for two case studies from brands like yours, with the starting point, the work done and the result.
Confirm who owns your ad accounts, creative and data, and what happens to them if you leave.
Check verified reviews and the minimum contract length before you sign.
FAQs: Best Shopify Migration Agencies
Which Shopify migration agencies are the best in 2026?
Our current top picks are in the Quick answer at the top of this page. We rank Shopify migration agencies on results and case studies (40%), specialty fit (25%), pricing transparency (20%) and verified reviews (15%). Sponsored spots are paid, labeled, and never change the editorial order.
How much do Shopify migration agencies cost?
Most Shopify migration agencies price in one of three ways: a flat monthly retainer, a percentage of ad spend or revenue, or a hybrid of the two. Each agency's pricing model and minimum budget are listed in the comparison table above. Ask for a written scope that lists what is included, the contract length, and who owns your accounts and data.
How do you choose between Shopify migration agencies?
Match the agency's specialty to your channel, category and stage. A launch specialist and a scale specialist are different hires. Compare pricing models, not just the headline fee: flat retainer, percentage of ad spend, or a hybrid. Ask what happens to the fee as you grow. Ask for two case studies from brands like yours, with the starting point, the work done and the result.
Are there free Shopify migration agencies?
Agencies rarely work for free, but many offer a free audit or strategy call before you sign. Use it to judge how well they understand your account, and ask for the audit findings in writing.