You got screwed. I would immediately go on to ebay and file, I forget what it's called, a dispute I think, but it's like a complaint. Ebay then gives you 30 days to work it out amongst yourselves before they get involved to arbitrate the dispute. If you used PayPal, you are doubly insured, and you will get a refund. It might take a couple of months if teh seller is a fraud, but you will get a refund.
Also, here's what I would do.
TSS has already offered to get a you a great deal on a refurb. If you don't mind a refurb, go for it. They are a great company that has helped me in the past.
The refurb will be a radio only, so if you need a home dock and car dock, you can also get them at TSS. If you already have an antenna and/or a 5V power supply, you can save tons of $$ by just getting the dock, an other option TSS gives you.
When you total everything up, you save a lot compared to buying a new SL2, plus don't forget that a new SL2 usually does NOT include BOTH a home and car kit.