I read the requirements, and will be using the Automatic Delivery option for a Google Play card. My question is that it says “Using this method allows the Buyer to test the code or game out right away and complete the transaction faster.”
Couldn’t the buyer not complete the transaction and use it anyway? I’m sure not, but couldn’t find an answer on how that works.
Also: Are there any scams with selling Google Play cards I should be watching out for?
Yes - if you give wrong card they should contact you (sometimes can happen typo on code or something). Otherwise you will always receive money after 3 days or before if buyer accept trade.