Purchase NBA 2K20 ?

A friend wants to use some of the PC mods and wants to purchase the game but doesn't want to pay $60 again (he has the XBOX1 already). Any suggestions for a good price? What's up with these digital downloads or CD Keys for $10-15? Are the safe? This is for a purchase in the USA.

cdkeys is grey market but i already use with with no problem : https://www.cdkeys.com/fr_fr/nba-2k20-pc is a key that you can activate from USA

100% legit stores are listed on isthereanydeal or gg deals but current prices are too high.