[quote name='Metroidman']I could host a group buy on it but I only really want Supreme Commander games. I don't care about MX vs ATV. If anyone needs more of these games and wants to do a group buy let me know.[/QUOTE]
I was in exactly the same boat and only wanted the SC games as well and hosted a group buy. The lowest MX has been according to steamsales was 9.99 last holiday season and steamprices doesn't even have it listed for sale before.
As you can expect, since it hasn't been in bundles, most people wouldn't want to lose $7 or $8 to sell it to you so you're probably better off just hosting your own group buy and getting rid of the other keys yourself. Especially if you need more than 1 item from the bundle. A lot of the other items if you want to move them fast (I did) will only go for $1-$2 since many aren't "complete" item sets and have been in a lot of other bundles.
You have about a week to decide, but I'd recommend people host earlier rather than later since near the end of the week, you can expect the for sale/trade forum will be more "busy" with the other keys as more people jump in. At least the price/game is low so longer term, it'll probably balance out and you might get lucky near the end of the week as more people buy the bundle themselves.
You could get lucky if someone doesn't check prices and doesn't care whether they break even or not, but I think I've only so far seen 1 person here sell some of the bundled items for really cheap so far.