Many years ago, I ordered a 10mm eyepiece from Burgess Optical and paid half the price in advance. I had a call from Bill today, and the eyepiece will be shipped in a few weeks. There are aspheric lenses, and he said that QC issues were what took so long to resolve, as aspheric lenses are more difficult to machine. There's a photo of the eyepiece in his web site, burgessoptical.com. There will be other focal lenghths available over the next year.
Bill has always been an innovator and I appreciate what he has done.