Hey!,
I've got a very nice source of pure pellets specially for guinea pigs in Enschede, Holland.
This is the place:
Zaadhandel Kootstra
Wethouder Elhorststraat 86 -88
7543 TE ENSCHEDE
NEDERLAND
Tel.: (0031)53-4315166
We bought our pellets there around a month ago, and the piggies love it. The guy, a very lovely man that knows about guinea pigs care and diet, said is a special pellet for guinea pigs with extra vitamin C. We don't remember well the prize, but I guess my husband paid 2 euros for 2 kilos and a half!.
