I do think this is a neat idea. I was wondering though...I know that the site owners/admins don't want to make money off the scans for copyright infringement reasons.
If a third party is selling printed covers and donating a portion back to us via boxes for scans, is that kind of a roundabout version of us profiting? I know technically we're not profiting in terms of getting cash, but if someone is getting items of value, then isn't it kind of the same thing?
I don't personally have a problem with it, I am ONLY mentioning it in case there are any concerns about this, and I don't want the site or anyone to get in trouble. From a practical standpoint, obviously it doesn't matter much because clearly there are people selling printed covers with UGC's all the time and they don't seem to be having any problem, haha.
But in terms of sticking to 'principles' or whatever of doing this the best way, avoiding remote chances of copyright infringement, I just wanted to mention it.
EDIT: Just to be abundantly clear, I am absolutely in support of this and don't really have a problem with it - and I know that the goal isn't to 'win' free boxes here, but rather to contribute to the site!