A buyer compares what lands on the doorstep, not what is on the price label. Enter a competitor's price and postage next to your own postage, and see the item price that actually beats them.
What the competing listing shows
Enter 0 if they offer free delivery
What you charge the buyer, not what postage costs you
How far under their total you want to sit
How it works: their total = item + delivery. Your total sits one undercut below it. Your item price is that total minus your own delivery charge. When your postage is cheaper than theirs, the last figure is positive and you can show a higher price than they do and still win.
Check the answer against your floor with the minimum price calculator.
Background
Marketplaces rank competing offers on the delivered total, and so do buyers. Two sellers can show the same item price and sit in a completely different order because one charges £3.99 for postage and the other charges £1.99. A seller watching only the price label sees a tie and cannot understand why they are losing.
If your delivery charge is £1 below a competitor's, you can show an item price £1 above theirs and still be cheaper where it counts. That is £1 of margin you are entitled to and most sellers give away, because they benchmark against the number on the competing listing rather than the number the buyer pays. The last figure in the results above is exactly that amount.
Moving postage into the item price makes your listing look dearer against a rival who charges separately, right up until the comparison is made on totals. It also makes the whole amount commissionable, because marketplace commission applies to the delivered total either way. Free delivery is a presentation choice, not a cost saving.
Winning the comparison takes one penny. Cutting by 50p to feel safe hands a competitor's repricer an invitation to cut again, and the pair of you walk the price down until one of you hits a floor. The undercut field defaults to a penny for that reason.
Re-Pricer makes this comparison on delivered totals automatically, on every listing, and accounts for a postage advantage when it decides how far to move.
Re-Pricer compares delivered totals on every cycle and moves your price only as far as it needs to.