The entire process is automated, the second the last ticket is purchased a winner will be randomly drawn and the item sent. However, in the case of the full 512x512 lottery the winner will only receive the head texture instantly, the rest will appear within 24 hours or so.
This has been going on for ages, didn't they get rid of some tickets before or something? Why not just do it again as this has been going on far longer then any other lottery held so far.