The Ultrasonics were inexpensive pickups Bill made in Germany for a U.S. marketeer who dramatically inflated their retail prices -- about 10,000 of them were made in 1986 and 1987. These designs are about to return as U.S.-made Keystone products selling in the $25 (for the Strat versions) to $40 (for the big 'buckers) range. Stay tuned -- this is already under way as I type!