Nobody wants you off here. All we want is you to be a productive member. You have to learn when to take your lumps. When to pay your respects and balance dues (csc). You're young and dumb, we all were once. I have no doubt you feel like you were screwed.... that being said the honor system in car audio is if it did not get damaged in shipping, works as it should and doesn't have any visual signs differing it from it's description.... it is yours the moment you start jamming it. I'm sorry it happened but it's not the sellers fault.
Stop the woe is me shite. Poor you you blew an amp and it's not your fault, poor you, we want you gone.
You said everybody pushes their subs till they stink. Everybody running that hard pops an amp too every now and then. You popped your cherry. You knew what you were getting into. You kept talking about blowing it and hope it's not too much to repair.
Just do whats right, take your lumps. If you want a warranty, buy new. Pay your debts, fix the amp, upgrade your electrical and then be productive.
Why should the seller be out the money for the amp and get screwed in the process. If you want your money back, have the amp fixed to the condition it was in when he sold it. Then send it back.