Commercial Profit Engines

E-Commerce & Digital Seller Calculators

Maximize net take-home margins across Etsy, Amazon FBA, TikTok Shop, Shopify, and Print-on-Demand channels.

Calculate total listing renewal, 6.5% transaction cut, country payment processing, offsite ads, and breakeven sale price.

Identify Amazon size tiers, billable dimensional weights ($L \times W \times H / 139$), and packaging downsizing alerts.

Calculate actual bank payouts after TikTok referral cuts, creator affiliate commissions, and shipping subsidies.

Side-by-side comparative matrix comparing Printify vs Printful vs Gelato net profit margins on apparel and mugs.

Pre-flight check Shopify product CSVs client-side for duplicate variant handles and broken image URLs.