I think they have mispriced this one as it retails at most shops around £5.99
Boots have them now for £1 each or 3 games for £2 instead of RRP £17ish, which to me seems like a great deal.
Orders under £40 do have to pay P&P which I believe is just under £3.
If you are spending around £50 do check out this website for more codes to recieve extra discount.
Hope this helps ;)