This is also handy for anyone with a spare DEALSPWN voucher they're trying to use before the expiry date of 31st May, which would take the price down to £7.85
This is the cheapest I've seen for this awesome game.
It's a fun arcade baseball game, with some great mini games included.
There's a really good demo on the marketplace that gives an accurate feel for the game http://marketplace.xbox.com/en-GB/games/offers/0ddf0001-0000-4000-8000-00005454885a
"The BIGS 2 celebrates the most epic of MLB® moments and offers a refreshingly fun and unique experience with dramatic walk-off homeruns, miraculous wall catches and acrobatic diving grabs. The BIGS 2 focuses on the "big" fast-paced moments in Major League Baseball with new opportunities to go up against MLB® legends, mini-games, Home Run Pinball and a variety of other thrilling new features."
This game is also in shopto's "2 for £15" offer, along with Planet 51, and Section 8.
Used at GAME £6.99 (from their website, doubt you'd see this in store, due to it being a fairly rare game on these shores, because noone gives a F about baseball here.)
Blah DVD £9.95
Powerplay Direct £11.99