I have ordered from Dingwall in the past, but now that they've got a good network of in-person and online dealers, I think it's all through dealers these days. If you can't find one in your region, there's plenty of great outfits doing it online and shipping most anywhere. We all can name a few that we favor.
Dealers
I still think you can't go wrong with the Dingwall FD-3 pickups for all around good tone, though you might consider FDV pickups which lean towards the more traditional (alnico magnets rather than neodymium).