Free tool
What would you actually keep?
Try a sale before you set the price. Replace the fictional example with your own costs and current fee assumptions.
The 12% and $0.40 defaults are fictional assumptions, not an eBay fee schedule. Estimated fees = (sale price + shipping collected + entered buyer sales tax) × fee rate + per-order fee. Buyer sales tax is excluded from your revenue. Check your marketplace's current category and fee rules.