Ace Combat Infinity fuel is currently discounted! The 10+1 and 50+10 Stocked Fuel sets are both 20% off for the next week!
It may be worth mentioning that Sony Entertainment America has a promotion going on right now that if you add USD$60 to your North American PSN from Paypal, you'll get $10 free within the next two weeks. Click here for more information. If there's a lot of stuff or fuel you've been looking to get, and you use Paypal and have a North America PSN, keep this in mind!