There is still a couple of months to go until GTA V for the PC becomes available, and while it is almost guaranteed to sell well, Rockstar will do all they can to help sales move along. If you pre-order your copy by the 1st of February you will be given $1,000,000 in-game credit to spend.
You will get this in the form of $500,000 for Grand Theft Auto 5 and $500,000 when you go online. However, just make certain you do pre-order your game before the start of next month, as you will also get another $300,000 to spend online as an added bonus.
There are several online stores to buy GTA V from in the UK, although GAME and Tesco seem to be the best two options.
GTA V for PC at GAME UK will cost you £34.99 and is ready for you to pre-order right now. This store currently has no incentives of its own, although we are sure they will come once the game has been released on the 24th of March.
Tesco is also selling GTA V for the same price, although you will earn 35 Clubcard points as a result. You might want to consider buying the game direct from Rockstar, as they want you to part with £39.99, but for that you have a choice of a free game. These include titles such as Max Payne 3, various Grand Theft Auto titles, LA Noire and Bully.