Do you sell Team Fortress 2 keys by any chance?
tf2 is free and he does not sell game keys if you read the topic you pick a game and send him the link for it with your email and pay him and then he gifts the game to your email.
He probably means keys to the MannCo crates.
I don't think I can gift those.
If I'm not mistaken, I would have to gift money to his wallet (minimum $5), which I don't think I can do.
The process is as follows: You download TF2 (if you don't have it), start it, buy keys from the in-game store, then trade the keys in-game to me. Naturally I will purchase enough to go over the minimum wallet transaction of $5.