-Seen senior accounts for sale for ~0.20 BTC and no buyers, 0.15- 0.18 seems like the fair average?
-Hero for around 0.30-0.60 BTC IMO, depending on the post quality and account history.
I suggest you make the maximum loan lower than the lower range (by a good margin), Allot of people might dump them on you if the price is reasonable to avoid the hassle of selling it themselves.
most of the Jr Member accounts being sold here are those used as collateral in Loans and did not pay. Lenders here give up to 0.01BTC loan for a Jr Member account as collateral. Jr accounts are the easiest to farm for those who are in to accounts farming.