According to changes to gift tradability on Steam, gifts can be traded until 30 day after purchasing. Unfortunately, that means that in some cases common trading can't be done. For acquire on demand gifts could only be sent as a gift through steam or by email. On that case, the buyer goes first. I send you gift only after getting the keys, I can go first in trade if you have good reputation on ST.
Leadwerks Game Engine: Indie Edition
Keys
According to changes to gift tradability on Steam, gifts can be traded until 30 day after purchasing. Unfortunately, that means that in some cases common trading can't be done. For acquire on demand gifts could only be sent as a gift through steam or by email. On that case, the buyer goes first. I send you gift only after getting the keys, I can go first in trade if you have good reputation on ST.