Can I move from Shopify to Magento? How long, how much, how risky?

Yes — Shopify → Magento is a well-trodden path. Realistic numbers:

• Timeline: 8–16 weeks for a typical mid-market store. Faster (6 weeks) if catalog is small and design is preserved; longer (24+ weeks) if you’re also re-platforming PIM/ERP.
• Cost: $15k–$60k for a clean rebuild on Hyvä-themed Magento. Add $10k–$25k for ERP / OMS / loyalty re-integration.
• Risk: the three things that go wrong: (1) URL redirects miss long-tail product pages, dropping SEO 20–40% for ~6 weeks; (2) customer passwords don’t migrate (Shopify won’t expose hashes), so you have to force a reset email; (3) saved payment methods at the gateway need re-tokenisation.

Mitigation: run both stores in parallel for 30 days behind a feature flag, only flip DNS once the redirects map ≥98% of traffic and the new store has 30 successful test orders. The risk is real but quantifiable.