I recently bought the badland 6x4 mat and terrain from gamemat.eu. I'm happy with both of them, they looked great as a photo from a recent game shows (The rocky bits and mat are theirs) and our table got a lot of complements on it's looks. I had two very small chips which I can't imagine is a common problem as the terrain was very well packages in the polystyrene cube with piece specific holes cut-out. No problems with the mat. I asked them for a paint list so I could touch up the chips. It turned out the paint would not very easy for me to obtain but they were apologetic and our conversation gives me confidence that if I had a more serious problem they would to fix it without any difficulty.
If anyone is interested I fixed up the chips using a black brush on primer, VMC Flat Brown, a mix of VGC Heavy Orange and AP
Skeleton Bone and finished off with GW