Glad that’s not a thing on eBay! My last second bids always end in the same odd number of pence in an effort to beat other people doing similar.
Lawyer here: I add Idiot Tax of Ā£200 on to my fees on matter where someone has made an offer on a house "Ā£123,767" instead of a simple round number. It's not clever, it just marks you out as a twat.