It costs about $600 the last time I checked. Basically, Linn will return you another (different) Troika that has already been rebuilt. You don't get back the your original one. I don't see it as a problem.
IMHO, a great deal. Since the lowest cost retip would be $3-400, and retipping is not equal to rebuilding.
IMHO, a great deal. Since the lowest cost retip would be $3-400, and retipping is not equal to rebuilding.