Price a reselling or arbitrage flip — retail arbitrage, garage-sale flips, or marketplace resale — after fees and shipping.
Estimates only. This tool is for planning and education — not financial, tax, or legal advice. It models the numbers you enter; real platform fees, taxes, and exchange rates vary. Verify with your own statements before making decisions.
Buy at $12, resell at $25 on a 13% platform with $4 shipping to the buyer. Fee is $3.25, so net is $5.75 per unit — a 23% margin. On 20 units that is $115 total.
Arbitrage profit is the spread between where you buy and where you sell, minus the marketplace's cut and the shipping you pay on both ends. Thin spreads need volume to matter.
Net/unit = Sell − Buy − (Sell × Platform%) − Ship to acquire − Ship to buyer − Other
Should I count my time?
Not in the math, but it matters. A $5 profit that took an hour of sourcing and shipping is $5/hour — scale or skip.
What if the platform takes final-value + payment fees?
Add them together into the single platform fee % for a close estimate.
How do returns affect this?
Each return can erase several wins. Track a return rate and shave it off net over time.