Maybe i wasn't clear. $200 your cost per speaker. JBL's or the Beyma Liberty 8's. I pay the shipping cost and the paypal fee. That is a fair deal. I don't need to sell these. I'm just trying to help ya out.
Personally, I would get the Liberty 8's. I have several and am willing to part with one or two. They are like having brand new JBL E120's.
Either way, I hope it works out for ya and ya get lucky with the ones you have.
Edit: Id be willing to do $300 your cost on the JBL E120's if ya bought two.
Have you tried contacting the seller? I don't know how long you have had them, but buyer protection aside, you could explain the situation the seller (that you didn't get a chance until recently to test them etc). If the seller is honest at all he/she should/could/might compensate you for selling you a defective speaker/speakers. Unless of course there were any sort of "as is" or "not tested" or "you're on your own" stipulations. Worth a try.