Leave the selling price at 0 to work from the markup.
What popular items resell for today
| Item | Cheapest | Typical | You keep (typical, after eBay fee) |
|---|---|---|---|
| RTX 5090 32GB | $3,411 | $7,019 | $6,064 |
| GTX 1080 8GB | $101 | $140 | $120 |
| Xbox Series X | $490 | $725 | $626 |
| Sony DualSense controller | $33 | $63 | $54 |
| Samsung Galaxy Z Flip3 128GB unlocked | $60 | $69 | $59 |
| Samsung Galaxy Z Fold5 256GB unlocked | $237 | $237 | $204 |
| iPad 11th generation (A16) | $210 | $401 | $346 |
| Mac mini M4 | $613 | $750 | $648 |
| Ryzen 7 7800X3D | $275 | $357 | $308 |
| Ryzen 5 7600X | $120 | $185 | $159 |
| Sony a7 III | $735 | $950 | $820 |
| Nikon Z6 II | $799 | $1,021 | $881 |
Current eBay asking prices (item + shipping), checked Nov 12, 2026. Use the typical price as a realistic selling price when you set a markup.
Price and profit at common markups
How it works
Selling price = cost × (1 + markup). Markup = (price − cost) ÷ cost. Margin = (price − cost) ÷ price, so margin = markup ÷ (1 + markup).
Selling on eBay? The eBay fee calculator takes the fees out first, and is this a good price? shows what the same item lists for today.
Questions
What is the difference between markup and margin?
Markup compares profit with what the item cost you; margin compares profit with the selling price. Buy at $40 and sell at $60: the $20 profit is a 50% markup but a 33% margin. Markup is always the larger number.
How do I calculate selling price from cost and markup?
Multiply the cost by one plus the markup. A $40 item with a 75% markup sells for 40 × 1.75 = $70.
What markup do resellers use?
Retail stores often double the wholesale cost, a 100% markup called keystone pricing. Resellers who buy used items to sell on eBay often aim for at least 100% to cover fees, shipping supplies and items that don't sell.
Does markup include selling fees?
No. Marketplace and payment fees come out of the selling price, so a 50% markup can leave far less after fees. Use the eBay or PayPal fee calculators to see what you actually keep.