Heruur your items are rather specialist and aren't things I would be looking for in a million years, so I'm not suprised your sales are slow. Have you thought about plugging your listings here on some technical forums and suchlike, I expect that would be the answer.
GreenHorseGems you have found the auction site to land on
I can't see any of your listings so are you restricting your listings to just the US, I suggest going global. Also perhaps buying a few items to kick start your feedback ( psst I have some low cost prints
) and also check out my listings to see how I dealt with the feedback problem.