Being as they're out of warranty, and previously owned (used), my guess is you'd need to start at some price less than the current price for new ones.

I got my new RSV2 for $80 18 months ago, but that was a terrific price available for a very limited time. It usually runs two to four times as much.

Linens-N-Things is currently advertising RoboReptile for $35
http://www.lnt.com/product/index.jsp?productId=2295745

ScottE -- collecting and building robots for 40 years - details in profile

I think you can ask whatever you want for it. Whether or not you'll get any offers at all, for any price, depends on many things.

"Practically New" does not mean "under warranty". That's a big thing for a buyer who may not be looking to tear it down or fix it up.

ScottE -- collecting and building robots for 40 years - details in profile

Rhodesie1 said: how do i get waranty?

Isn't that obvious?

You buy a new robot from the manufacturer, and the manufacturer honors their warranty.

When you buy a used robot from somebody, the manufacturer rarely honors any remaining warranty.

That is typically referred to as the warranty being non-transferrable.

ScottE -- collecting and building robots for 40 years - details in profile

You, as the seller, would have to provide a written warranty of your own.

"Dear buyer, if the robot I sell you fails to operate as advertised, I will reimburse your money, or replace it, at my discretion."

ScottE -- collecting and building robots for 40 years - details in profile