Haha, in Netherlands prices are seem to be quite high:
not only the computers, a box of cigarets: around 6.5 euros.
Robbery !
But try the US, in NYC cigs are 12 dollars a box .
As for your need for a faster computer; you mentioned games and Windows .
Do you happen play games in Windows, maybe even via an emulator ?
Either way, for gaming, your graphics card , or lack of a dedicated one, might be the bottleneck .
I'm not entirely sure which MBP you own - a 2011, 13" MBP 8.1 ? - but with the specs you mentioned it should do very well for regular computing .