The 30-second answer
- Already on Wix, store under $500K/year: stay on Wix, go headless. The migration cost isn't worth it.
- Already on Wix, store over $500K/year, need custom checkout: migrate to Shopify Plus. Plan 4-6 months.
- Greenfield (new store, no platform yet): Shopify if you need scale + ecosystem; Wix if you want lowest total cost and the Wix dashboard suits your team.
- Already on Shopify: stay on Shopify. Going to Wix is a downgrade for ecommerce-specific features.
1. Cost over 3 years
For a store doing 50,000 monthly visitors and ~$200K/year in revenue, here's the realistic 3-year cost:
| Cost | Wix headless | Shopify headless |
|---|---|---|
| Platform plan | Business VIP $59/mo | Shopify $79/mo |
| Bridge / hosting | Trama Pro $49/mo | Vercel Pro $20/mo |
| Headless framework | $0 (Trama SDK) | $0 (Hydrogen) or Vercel |
| Engineering setup | ~80 hrs × $100 = $8K (one-time) | ~120 hrs × $100 = $12K (one-time) |
| Maintenance over 3 yrs | ~80 hrs × $100 = $8K | ~120 hrs × $100 = $12K |
| 3-year total | $19,888 | $27,564 |
Shopify is ~40% more expensive over 3 years for an equivalent feature set. The gap widens at higher revenue (Shopify's transaction fees scale; Wix's don't). It narrows on Plus where you get better checkout customization that Wix can't match at any price.
2. Performance benchmarks
Identical-content stores tested mobile, throttled 4G, median of six rounds:
| Metric | Wix headless | Shopify headless |
|---|---|---|
| Lighthouse (mobile) | 94 | 94 |
| TTFB (cached) | 112 ms | 115 ms |
| LCP | 0.9 s | 0.9 s |
| JS shipped | 62 KB | 62 KB |
| API rate limit | ~50 rps/token | 1000 rpm/shop |
| API style | REST | GraphQL |
With proper edge caching, performance is identical. The difference is structural: Shopify's GraphQL lets you request exactly the fields you need in one round-trip, Wix's REST often requires a second call to hydrate variants. In practice, a good bridge layer hides this difference — both feel the same to your frontend.
3. Checkout customization
This is where the platforms genuinely differ.
| Capability | Wix | Shopify (standard) | Shopify Plus |
|---|---|---|---|
| Custom cart UI | ✓ | ✓ | ✓ |
| Custom checkout UI | ✗ | ✗ | ✓ (Extensibility) |
| Custom shipping rules | ~ Limited | ✓ (apps) | ✓ (Functions) |
| Custom payment processor | ✗ | ✗ | ~ Limited |
| Post-purchase upsells | ~ Apps | ✓ | ✓ |
| B2B with tiered pricing | ✗ | ~ Apps | ✓ (B2B) |
If you need full checkout customization, you need Shopify Plus. Period. No amount of headless wizardry on Wix will get you there. This is the single most common reason teams migrate from headless Wix to Plus.
4. Lock-in and reversibility
Often overlooked, frequently the deciding factor:
| Reversibility | Wix | Shopify |
|---|---|---|
| Revert to native frontend | Trivial — Wix is already there | Trivial — Liquid theme is still there |
| Switch to a different headless framework | Trivial — same Wix backend | Trivial — same Storefront API |
| Migrate platform entirely | Hard — products + customers + orders | Hard — same plus theme rebuild |
| Export your data | CSV export available | CSV + GraphQL export |
5. Ecosystem and apps
| Dimension | Wix | Shopify |
|---|---|---|
| App marketplace | ~500 apps | ~13,000 apps |
| Headless-compatible apps | Limited | ~100+ explicitly headless-friendly |
| Agency partner network | Smaller | Massive |
| Developer mindshare | Smaller | Industry standard |
| npm packages | ~50 | ~2,000+ |
Shopify wins the ecosystem battle by an order of magnitude. If your business depends on a specific app (subscription billing, advanced shipping rules, channel sync to Amazon), Shopify almost certainly has it and it's usually headless-compatible. Wix's app ecosystem is shallower but covers the basics.
6. Time to live
How long from "decision made" to "production headless storefront live with custom domain"?
- Wix headless from existing Wix site: 1–2 weeks. No data migration, just frontend build.
- Shopify headless from existing Shopify site: 2–4 weeks (Hydrogen template) to 4–8 weeks (custom Next.js).
- Migrating Wix → Shopify + going headless: 3–6 months. The longest path, by far.
- Greenfield Shopify headless: 4–8 weeks. Includes platform setup, products, theme.
- Greenfield Wix headless: 3–6 weeks.
7. Decision rule
Run the actual decision in this order:
Q1: Are you currently on Wix?
If yes → see Q2. If no → skip to Q3.
Q2: Are you generating >$500K/year AND need custom checkout?
If yes → migrate to Shopify Plus. If no → headless Wix.
Q3: Greenfield. Do you need ecosystem depth (specific apps, channel sync) or expect to scale past $1M/year?
If yes → Shopify headless. If no → Wix headless.
That's the entire framework. The complexity is in honestly answering Q2 and Q3 — not in the decision rule itself.
8. Frequently asked questions
Is Shopify better than Wix for headless commerce?
For high-volume stores ($500K+/year) needing checkout customization and multi-channel selling: yes. For smaller stores already on Wix: usually no — the cost of migrating data exceeds the benefits, and headless Wix gets you 90% of the speed/SEO benefit.
How much does it cost to go headless on Wix vs Shopify?
Wix headless: $14-$59/mo (Wix plan) + $0-$149/mo (bridge layer like Trama) = $14-$208/mo. Shopify headless: $29-$2000/mo (Shopify plan) + $0-$200/mo (hosting) = $29-$2200/mo. For a typical mid-sized store: Wix headless ~$50/mo, Shopify headless ~$100-150/mo.
Should I migrate from Wix to Shopify for headless?
Probably not, unless you need full checkout customization (Shopify Plus). The migration costs 3-6 months of engineering plus $5-50K in data and SEO transfer. Headless Wix achieves 90% of the speed/design benefit for $0 migration cost. Make the move only when scale forces it.
Which has better headless documentation, Wix or Shopify?
Shopify, by a wide margin. Hydrogen has a polished framework, dozens of templates, and strong community examples. Wix's headless docs are technically complete but less developer-focused. The gap closes if you use a bridge layer that abstracts the differences.
Can I use Wix and Shopify together in a headless setup?
Yes — Wix as the CMS or content backend + Shopify for products and checkout is a valid pattern. Some agencies do exactly this for clients who already have content on Wix but want Shopify's commerce capabilities.
Which is faster headless: Wix or Shopify?
Roughly equal at the API layer (200-400ms p50). Shopify's Storefront API is GraphQL with better query batching; Wix's Stores API is REST with more chatty round-trips. With proper edge caching both reach Lighthouse 90+ and TTFB under 200ms. The platform is rarely the bottleneck.
Preview your store on both.
Trama supports Wix, Shopify, and Webflow. Paste your URL on the homepage and see your products through a Next.js frontend in three seconds — same code, whichever platform you pick.