Why your bid was adjusted.
WHAT AN INCREMENT IS
The minimum amount by which a new bid must exceed the current one.
WHY THEY EXIST
They prevent bidding by trivial amounts and keep auctions moving.
HOW THEY WORK
The increment usually rises as the price rises.
Small at low values, larger at high ones.
WHAT THAT MEANS FOR YOU
Your bid must be at least the current bid plus the increment.
WHY YOUR BID MAY HAVE BEEN REJECTED
It did not meet the minimum.
Check the stated minimum and bid at or above it.
WHAT TO DO NEAR YOUR MAXIMUM
Check whether the next increment exceeds it.
If it does, you are out.
WHAT NOT TO DO
Assume you can bid a token amount above someone.
WHERE TO SEE THE INCREMENT
On the listing, alongside the current bid.
WHAT TO PLAN FOR
That the final price moves in steps, not smoothly.