Looks like a good price for a good game. Quite addictive, it's basically just the Mercenaries mode from games like RE 4 & 5 - lots of fun. Can see it in stock at all stores local to me so hopefully it's widely available.
Looks like the product description is wrong (for Resident Evil REVELATIONS) but the image is for Mercenaries.
Can confirm it's available to reserve at the following stores -
Wolverhampton Bentley Bridge
Wolverhampton Wulfrun Centre
Likely to be national, hopefully anyway :)