I've seen it cheaper elsewhere, but most of those sites are out of stock so it's a good price for a brand new game. Much better than purchasing them individually from XBLMarket Place
Effectively you could get this for £9.63 from Priceminister using the code AFFWELCOME3 + Cashback
Save £3 Off Your First Purchase
Enter discount code AFFWELCOME3 at the checkout to receive £3 off your first purchase.
Plus via TopCashBack:
First Valid Purchase
Experience new ways to play the best selling board games
Connect 4, Battleship, Yahtzee, Boggle, Sorry! and the all-new, Sorry! Sliders
Play like Never Before!
Choose between traditional rules mode or mix it up with additional game modes for entertaining new ways to play
Deck Out Your Very Own Game Room!
Play games in several different themed rooms
Earn points by playing games and completing challenges to trade in for new items to make your game room unique
Display your game successes in your own trophy area
Play With Friends and Family!
Play with up to four players in Yahtzee, Boggle, Sorry! and Sorry! Sliders, and up to two players in Connect 4 and Battleship
Host a Game Party!
Games feature "party modes" for each game especially designed for getting family and friends together to play
Each game in party mode features four new exciting ways to challenge your competitors
Be the board game champion with customised tournament play across different games and challenges