One think i must say you there is an hero account being sold at those rate, soo i really doubt you can sell your potencial senior for such price, does this account has a signed message? Reduce your price if you really do wanna to sell the account.
I can sign a message.
I wanted to ask op the same questions. Senior or hero account are been sold on that rate and even they find it difficult to sell talk more of full member account. Op lower your price and I think people will buy if it has the quality posts as you said.