Cost, timeline, and credentials, what does an art + craft Magento build look like?

Realistic ranges for an art-supply / craft retailer at $500k, $10M GMV:

• Audit: $499 fixed-fee, 5 business days, ~20h @ $25/hr. SKU count + hazmat % + school B2B + brand portal gap analysis + written platform-fit recommendation.
• Build: $4,999 fixed-fee, 6 weeks, ~200h @ $25/hr. Catalog + hazmat-attribute module + UPS/FedEx Ground routing + school B2B portal + W-9/tax-exempt cert flow + one brand authorized-dealer portal + ReCharge subscription craft-box + yarn/fabric configurator + Hyvä storefront. Suitable for stores up to ~25,000 SKUs and 3 brand portals.
• Custom enterprise: quoted in 24h. Multi-brand authorized-dealer portal (5+ brands, EDI feeds), 50-state school B2B with tax-exempt cert validation, custom-color paint mixing configurator (Golden Heavy Body style), multi-warehouse with split-ship, PIM middleware, DIY content + LMS integration. Typical scope: $30k, $120k, 10-24 weeks.
• Hosting: $400, $1,500/mo on Cloudways / dedicated. Art and craft seasonal spikes (back-to-school August, holiday craft November-December, January resolutions) mean over-provisioning for 4-6x base traffic.
• Ongoing retainer: $1.5k, $5k/mo for quarterly hazmat audits, brand-portal compliance sync, subscription-box churn monitoring.

My credentials: Adobe-Certified Magento Developer, 7+ years of art-supply and craft DTC + B2B builds (catalog scale up to 50k SKUs, hazmat routing across 50 US states, school B2B with state-by-state tax-exempt, authorized-dealer portals for Winsor & Newton-tier brands). Available on Upwork (Top Rated Plus, 100% job success) and direct.