I love Virgin Vie One Step Face Base - its a foundation and a powder all in one & is great at covering spots, scars and blemishes, You but your first one in the compact, but can then buy refills at around £11.50 ish. Its lasts for ages too.
If you check out thier website, you can look for shops nearby, get in contact with a consultant in your area or buy on line.

http://www.virginvieathome.com/public/

Good Luck!