You've clutching at straws, and not accepting that during your learning process, you made some mistakes. You shouldn't compound them, but there is nothing to stop you from learning from your mistakes.
I made a mistake and bought I only paid a dollar for it, but in my opinion, and that of most other members, I overpaid.
Most people think that I should forget about it, and just leave it to drop. I feel that I've paid for it, so I might as well use it, but I won't try to justify myself by trying to portray it as a $10,000 name.
You've got the names, so you might as well try to sell them, but unless you are giving them away in a free push, don't try to sell them as a block. Remember, if somebody wants to buy a name, they may not want to leave it with Godaddy, and paying the renewal fees on a number of names they don't want may put them off.