Quoted from WeirPinball:If you follow sales somewhat - you will see a drop in the new title prices (used) about 4-6 months or so after the initial deliveries. Always that initial surge of people that bought right away dumping the games. For me this is the sweet spot and you can get one with shaker, powder coat, etc for less than NIB.
A few years back before NIB pinflation ran wild, people would buy a pro NIB, enjoy it for a while, wait for the game to go out of production, and then sell it for more than what they paid.