If there is a voting poll how much should be the price for copper member, it should be 0.015 BTC on my view. With the INSTANT benefit of faster intervals on posts, unlocking the posting of images and most of the benefits a regular member rank has, that is already too much just by paying a few BTC. 0.0021 BTC is not that much that is why a lot of scammers out there would prefer to pay it and scam people. Increasing it to 0.00624 is only a slight increase for these benefits they are getting. I suggest to have it raise more.