If it’s used than tax had already been paid and double-jeopardy will make no sense.Not sure if you are referring to sales tax that may have been collected by the original dealer from the original purchaser, or to income tax that may have been paid by the original dealer based on his profit from the sale. But neither is relevant to the question.
...you can even claim losses out of this sale endeavor.Yes, as I mentioned in my initial post that is a possibility, within certain limitations.
Regards,
-- Al