Yes but noone does it for jr.member . Who cares if you sell a jr.member with no positive trust? If it was a hero member with +50 then yes you were right.
Also , right now it is at 0.005 , so I believe thats veeeery cheap for 3 members.
Buying and selling of accounts are all the same regardless of it's rank. Actually, IMO a jr. member account can cost about 0.001 BTC each so you, selling those three for 0.005 BTC is not cheap at all, plus post quality is not that good. Maybe you could wait a bit more until the accounts reach a member rank, right then, someone might actually be interesed to buy them.