I made a flipholder a few months ago, and have been struggling ever since trying to find a value on the product that's "justified". I have gotten very good feedback on it, but I haven't gotten a reply back from the big sellers who sell collecting-equipment. So I thought I'd check around in some forums to see what people think. For info, it's made from PVC-free plastic with a 3d-printer, and it takes about 4 hours to print a single one. Would be x1000 faster with a mold, but I don't have the capital to invest into that. It can also be modified to hold anything from 1 to 30+ flips. 10 just seemed like a nice number to start on. I am aware that self-promotion is not allowed on this forum, so I will not be including any links or info for buying this product. All I want is some honest feedback to what you think this product is really worth, and if you see it having any potential in the coin collecting community. Thanks!