Not a true advantage or an advantage at all. The Awp is crucial for calling, getting the quick picks, or area denial for a rush. This restriction would only serve to further gimp awpers. The arguement that awps would be lying on the ground just gives people a reason to surround an awper and wait for him to get picked. There's no advantage and people shouldn't be joining in the middle of the round after the buy period is done.

I'd argue pubbers minds work a different way. They buy what they want. Money saving and save rounds aren't their strategy.

The only thing I can see this achieving would be to limit the playing capabilities of those who are skills with the Awp, and giving newer or lesser skilled players more of a chance to kill these awpers. I don't see a curren problem and have never really been denied the Awp when it's one per team. We are not here to limit good players' ability and give the noobs an easier time.