My friend is interested in purchasing my trusty (and babied) Z3. Comes from a non-smoking home. Was ceiling mounted in a dedicated home theater and works 100%. Filters cleaned very regularly. No bad spots or pixels. Comes with Box, Remote, and all other items. Originally purchased from Projector People. I have the original receipt. Has 485 hours on original bulb. What is a fair price to sell it for? I tried selling it here for $750 but there were no takers. Is $500 a fair price? I can't even find these on eBay for sale... THANK YOU!