I got mine for $4.40 at a store that dpecializes in fancy lamps and decorative track lighting. There were scores of different MR16 bulbs and hardware to go with them. The backroom tech/salesman was facinated with my bike lights (MR16/NightSun) and was very helpfull. If no lamp stores nearby maybe find out where interior decorators get their wholesale track lighting supplies and try there. I have found that many stores that say For The Trade, Not for The Public are happy if you wave cash and know what you want in advance.