Marginary: Seller Profit

Know what you keep before you list.

Marginary is a private profit calculator and decision journal for individual marketplace sellers. Enter a selling price, shipping, tax, item cost, packaging, labor, ads, and other expenses to see projected take-home, fees, profit, and margin instantly.

Built-in eBay and Etsy fee profiles show included charges, exclusions, and source links so an estimate never hides its assumptions. Create a custom profile when your category differs.

FREE
• Unlimited calculations
• 10 active saved decisions
• 1 custom fee profile
• Detailed fee breakdowns
• Target-profit selling price
• Search, status, notes, and tags
• Text sharing
• CSV export
• Full JSON backup and restore
• Works offline — no account required

MARGINARY PRO
• Unlimited saved decisions and custom profiles
• Same-currency marketplace comparison
• Private insights (fee drag, trends, marketplace mix)
• Local receipt / item photo attachments
• Shareable image profit cards

Privacy by design: no ad SDK, no behavioral analytics SDK, and your decisions stay in on-device storage unless you export them.

Marginary provides planning estimates, not tax, accounting, legal, or financial advice. Marketplace fees vary by category, country, seller status, ads, tax, and optional services. Always verify current marketplace terms before listing.

Privacy Policy: https://itgreenservices.com/app/privacy
Terms of Use: https://itgreenservices.com/app/terms