Just so you know a member account cost about 0.01 btc and not more than 0.02 btc and the price will depends on the post quality of the account. Also if you can provide a signed message you can state it in here. About the trust rating of the account and the post quality also. Btw, does it have any potential activity?
as he said in OP, account has 84 potential activity, I think the current activity of this account is lower and 0.04btc is high price for such account with less then 80 posts, if the account has very good username and good number of posts and quality then you might sell it for 0.02 if you are lucky
