Original Hawx, (PS3@£5) personally I think better than the sequel, at not a bad price. Probably skulking around the £5-£10 mark elsewhere. Yes its CEX but not a bad price at all.
What they say:
You've often relied on them in other Tom Clancy games, but for the first time you get to play as an advanced fighter pilot in the most exciting combat flight sim of this generation. Taking the role of a U.S. pilot the game's plot contains elements from both Ghost Recon: Advanced Warfighter 2 and EndWar as you end up defending the United States from corporate mercenaries.
Although it features plenty of realistically modelled aircraft and other military vehicles this is an accessible, fast paced arcade action game - not a stuffy simulator. You'll engage dozen of bogeys at a time and never have to worry about running out of missiles, let alone targets.
The unique Enhanced Reality System (ERS) allows you to customise the difficultly level however you want, with a set of pilot assists that let you give control of things like radar, damage control and anti-stall measures to the computer. Or you can simply take control of everything yourself and prove yourself the real top gun.