Here's a $5 game that qualifies since the list price is at $19.99. Enjoy!

Edit: Here's a legitimately good PS4 game for $10 that qualifies, too.

Edit2: A LOT of games are on sale for E3 at the moment. Just go to the Video Games section on Amazon and click the $10 an under button and there's a good few games for next to nothing that have a list price of $19.99 and qualify.

You should give BF1 a try, I bought a code for PC for 5 dollars on amazon lol, it's really fun and there's still a lot of people playing.

Edit: Heres the link if you want to buy it, the code goes to your email that's linked to the amazon account after purchase (Note that this is for Windows 10, other versions can be found but they are like 10 dollars more) : https://www.amazon.com/Battlefield-1-Online-Game-Code/dp/B07ST7SDSK/ref=sr_1_1?dchild=1&keywords=battlefield+1+PC&qid=1589996978&sr=8-1

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Graphics are nice, takes up about 90 GB or less after install despite google saying 50. It's pretty easy to get into, you get a nice walk through on the controls in the beginning and it basically all carries into multiplayer, or campaign if you want.