Think so, I only got the 60$ key but from Reddit it sounds like the 480$ pack gives 2 extra keys to share.My key for spending enough previously showed up in my account and I was able to activate it on Steam. No download yet of course.
There is something called an Epic key as well, is that the one for buying the $480 pack? I might still buy that when Christmas bonus money shows up, but does that mean there will be extra keys to give out?