Cost + timeline + credentials, what do I charge and how long does it take?

Adobe-Certified Magento + Hyvä developer, 8+ years of B2B promo + corporate-merch builds shipped, $25/hr blended rate. Three tiers:

• Audit: $499 fixed-fee · ~20h @ $25/hr · 5 business days. SKU sprawl audit, decoration configurator UX review, MOQ + lead-time disclosure check on top 100 SKUs, B2B corporate-account flow walkthrough, PromoStandards EDI readiness check on top 3 suppliers, Lighthouse + INP benchmark, written report + prioritised 90-day roadmap.
• Build: $4,999 fixed-fee · ~200h @ $25/hr · 6 weeks. Decoration configurator + live mockup, MOQ + lead-time disclosure across full catalog, one ASI / PromoStandards supplier feed integration, B2B corporate-account layer with tier pricing + Net-30, Hyvä storefront with 90+ mobile Lighthouse, up to 5,000 branded SKUs migrated, 30-day post-launch support.
• Custom: 4imprint-scale, quote in 24h. 50k+ SKU multi-supplier feed catalog, multi-tenant corporate brand-portal infrastructure, custom mockup engine with 3D drinkware preview, multi-region with regional supplier feeds, brand portal integrations (Yeti / Hydro Flask / Patagonia). Typically $25k-$120k depending on scope, 12-24 weeks.

Realistic ranges for a promo brand at $1M-$5M GMV migrating to Magento + Hyvä: $15k-$45k build cost. Add: configurator setup ($4k-$10k), one PromoStandards feed ($8k-$15k), B2B corporate-account layer ($6k-$18k), brand-portal integrations (+$3k-$8k per brand).

Ongoing: $1.5k-$5k/mo retainer for through-season ops (Q4 corporate-gift rush, Q1-Q2 trade-show season, post-launch supplier-feed health monitoring).