I've never spend much money, excluding computers (and not much on those either) and aside Master System and games I had parents buy me as kid, nearly all my games are minimum price re-releases, second hand or even junk given away.
Most I've ever paid was around 30 $/€, probably Asterix on Master System (which is one of the very platformers I've really enjoyed, played it through over dozen times along 30+ years.).
Of PC games most I've payed for Police Quest 3 (which was my first PC game) and Wing Commander 3 (being my favorite series, though not favorite game of it).







