I bought mine new. Off the dealer lot. I'm the only owner and always will be.
Problem with auction, you don't get to ask the history of the car. Here in KY, if you buy a used car, they need to provide info about previous owner so you can call and ask about maintenance and if it has been wrecked.
Just my 2 cents.
There are usually SVT's on ebay, you can ask the owner, but you don't get to see in person and test drive. That seems a little scary. My brother in law bought a '94 RX-7 off of ebay, went to Georgia to pick it up. Turned out to be as described.