I've been thinking about buying this game for a while now and at this price, there is no better time to try it out and this game has consistantly received good reviews.
The price of £27.99 includes free recorded first class delivery and the site states that 99% of orders arrive the next working day providing the order has been completed before 5:30pm, which is extremely efficient.
Don't forget to go through Quidco to receive 4% cashback, which will bring the price down to £26.87.
Hope that helps. :)