This person quoted me on a product, we agreed on a set amount per weight, agreement was finalized and agreed by both parties, I then sent the agreed bitcoin to their nominated bitcoin wallet address (this one being reported). However when they confirmed they received the bitcoin, they also then told me I had to pay again for a larger amount which was double the cost or they would not deliver my order, when I responded and told them I did not want to pay double or order double, they ceased communication with me and kept the bitcoin. I contacted them several times asking for them to honor the initial agreement or else return the bitcoin to me and never got a response so this is a scam - get someone to send bitcoin and then when they send it demand more. I wanted to upload 3 image files to show the email conversation, and the transaction, but you only allow one image so have attached the one I thought was the best, but I did also want to include the email comment where they said they received the bitcoin and now wanted double that but that does not show their wallet address on it so opted to include the transaction only. This wallet has not been reported as a scam before, but there is another wallet that this one funnels funds to which is 1GrwDkr33gT6LuumniYjKEGjTLhsL5kmqC and I note that this wallet address has been reported as a scam 10 times already. If you do a lookup on the wallet I am reporting, you will see in their transaction history they keep depositing incoming funds to that address and that address only, so the two are connected.