Sealed Gameboy Games

Does anyone here collect the sealed Pokemon Red and Blue gameboy color games? If so, do you have any tips on how to spot a reseal job? To me it looks impossible since the shrink wrap is clear to begin with.

Any info would be greatly appreciated!

www.ebay.com/itm/Pokemon-Red-Version-Nintendo-Game-Boy-1998/192522254267?epid=8474&hash=item2cd33877bb:g:cfgAAOSwyKta4SVR