I've recently bought a new set of locator pins from 126fan.sk - 1 Euro each. Axel Gerstl also do the pins and bolts for a similar price (they're listed in the brakes section).
I've ordered stuff from both outfits and the service has been great. If you need stuff in a hurry, Axel Gerstl is probably quicker and the postage may be cheaper.
Mike