Just bought my first Xbox One S, where can I get cheap disc games?

I simply purchased an Xbox One S for about $115 with one controller. I’m making an attempt to see the place I should buy low-cost video games for it. I’m not considering keys as a result of I heard that they could lead to my retailer being banned because of area fraud and such, so I believe disc is safer. I noticed individuals saying that the disc video games ought to go for round $1-$3 per sport for the Xbox one, however after I take a look at eBay all I discover is dearer heaps with no actual video games (sundown overdrive, halo, stuff like that…). I’m situated in NYC so any native choices are good too, however I solely ever see GameStop or Finest Purchase. Thanks!