Maybe the seller isn't responding because you've sent him countless PMs telling him to get a job. Unless you had a written contract stating that he couldn't spend the money until you paid him in full, he doesn't have to do anything. Unfortunately for you, it's hard to send half of an amp just because you only paid for half of it(or however much you paid) at the time.
I think the fact that he sent you part of the money back isn't something he should be praised for, although he legally didn't have to. Moral value and legal obligation aren't transferable. To protect yourself, you should have stated that he couldn't spend the money. That way, he would have been able to pay you back.
You had a medical emergency, which puts neither of you at fault. You needed money, and asked for what you gave him back. Because he spent part of it, he couldn't give you everything. He is unemployed, and has been for over a year now. That's not your fault, but he isn't obliged to do anything for you. You've grown considerably angry(not unexpected; you've had money owed to you for a year), but considering it's only $75, and the seller has SEVERAL references, you need to stop pretending you're being the good guy. If you've got a job, and enough money for car audio equipment, you need to stop worrying about the $75 until he makes contact again. Making a thread telling him to get a job isn't going to do anything. Sending him PM after PM until his box is full isn't going to do anything. Trying to get everyone here to tell him to pay you back isn't going to do anything.
If you want to be the better man, stop making mountains out of ant-hills.
