something like this perhaps?
Asus P8H61-M PRO or
Asus P8H77-M LE
Kingston HyperX blu 8GB (2x4)
Intel Core i3 2120 3.3 GHz
Total: ~€260
You could save some by "only" getting 4GB RAM, if you go with the i3-2120 then just opt for 1333MHz RAM (assuming it's cheaper).
You can get a cheaper motherboard if you don't intend on using an SSD in the future. I mean you can still use an SSD but you'll be limited by the speed of the connections, the Pro comes with SATA III (6GB/s).
Also check the available stock, perhaps you have other sites you can use if the delivery is going to take too long.