OK, would you buy from Amazon? They usually have good prices and if you are premium (or whatever they call it in the UK, I think that they have different names for the service) or you sign up for the one month free trial you'll have free shipping.
Here's what I'd do, I know it's off budget, but that's the minimum I'd buy for a computer dedicated to gaming:
-
i5-3330
-
ASRock B75-Pro3-M
-
1x8GB RAM (so you can upgrade in the future to 16GB)
-
Sappire R9-270X 2GB GDDR5
-
Corsair CX500M (just 2 or 3€ mor expensive than the non modular one, so no brainer)
-
1TB Seagate Barracuda
-
Fractal design core 1000 (nice and really cheap little case, just throw a couple of vent more to it and you're good to go)
TOTAL: 590€ shipping and taxes included
If you're not willing to spend more than 500€ you have a couple of options:
-Swap the motherboard for a LGA1150 H81 and throw a 50€ pentium or celeron or whatever, (you'll be able to play just fine, but you have 0% future proofing and some games will require more CPU power than that) and reduce the RAM to 4GB. You can also get a cheaper PSU, just stick with a good brand and don't go under 450 or 500W
-Same as above: 4GB of RAM, chapter PSU if you want and a cheap FM2 A78 motherboard (they go as low as 50€
😉 with an Athlon II x4 740K that should cost less than 65€. Just don't buy and APU, they're not worth the money if you're using a dedicated GPU, and the AM3 platform might be good for budget gaming, but I see it just and old and power hungry platform, in 2014 I'd stay far from it.