10-05-2020 6:07 PM
What will happen if you don't pay within a couple of days or so, is that the seller will likely open an Unpaid Item case against you to get the selling fee credited back to their Ebay account. Unless you pay then, you get an Unpaid Item strike slapped on your account. One won't hurt, but two will prevent you from buying from all sellers who have their accounts set to block non-payers.
If you're interested in bidding on something, but can't immediately pay, ask the seller if they will allow delayed payment. And ask before you bid, not afterwards.