I'm trying to come up with a price I should be charging per minute to laser items. I figure my tube is 4500 and could last as little as 800hrs, unsure how much optics are and how long they last, say 500 and 500hrs. So that's 0.11/min. I'm thinking I should charge around £2/min. I'm doing a friend 25 of these for £50, does that seem like a reasonable price? Material was free
http://i8.photobucket.com/albums/a27...427_122259.jpg