In the past few months I've purchased and paid for 2 RedBear MK60 heads, 1 through eBay and 1 through Reverb. Both sellers flaked out a few days after the sale and refunded my money. Neither gave any reason or anything but I suspect they wished they had sold for more. The Reverb dude kinda pissed me off because I made him and offer and he agreed to it. Why agree and then flake? Just pissed and venting a bit. I've been looking for a decent deal on one of these heads for almost a year, they just don't pop up that often and prices can vary kinda wildly.