I'm pretty sure this is semi-known by funk collectors. This was on ebay a month ago, from that guy selling some deceased milwaukee collector's records, didn't even crack $150. Last year it was on ebay also, but it was from that shady Japanese seller that kept listing (clearly overgraded) records, shill bidding them, and relisting them. So I don't know if it sold. It generally doesn't come up for sale that much though.