That wouldn't be in the spirit of the charitable causes though would it?
$5 is good value for even a couple or even one of the games in that set, so giving some of them away to people tight-fisted enough to not want to donate money to charity, or worse still trading/selling off the spare games to break even or profit from the bundle over all is pretty sad (I'm not specifically accusing you of wishing to do that, but it does happen and that's why they do it this way)
Edit: the biggest example that springs to mind was the amazing EA/Origin bundle from a little while back - within hours of the bundle going live there were tons of ebay auctions attempting to re-sell the codes from the bundle for ~£25 or something (which was still a good deal, but a 500% odd markup), some sellers with multiple bundles...