Seems like a cut and dry case to me. Tamuka on Listia sent me an invalid $15 Amazon code. I filed for a refund saying, "invalid Amazon code." The seller responded with "we didn't send her a code because of non-payment." Listia sent him the message "buyer paid." He never sent me a valid code, so I filed for a refund. Richard on Listia sends me a message telling me to send another support ticket with a screenshot of the invalid code on Amazon. I have tried but unfortunately, I run out of time on the support ticket telling me I took too long. I should have been refunded as soon as the seller said he didn't send me a $15 code.
Bottom Line: No, I would not recommend this to a friend