Just found this and ordered at £19.99. You need to be a AMAZON PRIME NOW member.
PS4 only - £19.99.
Remember if your order is over £20 enter XMASGIFT at checkout (after adding a 4pk of Corona) to get them for free.
New customers may be eligible with other discount codes for up to £10 off - but I doubt codes will work against games.
****Edit at 1550hrs. Unfortunately now up to £24. A price change in as little as half an hour by £5. Bit of a joke if you ask me. New customers may be able to use codes as detailed in thread to knock the price down. Plus it takes you over the £20 required for your 'free' beer or mince - only you effectively pay for it now!****