If we were to judge based on grammar and spelling, hardly anyone who posts on the internet anywhere could be trusted. ;-)Are you sure? The ad says it's a Sonix, whatever that is. I have no doubt there could very easily be more to this story, but I'd be somewhat leery of someone who wasn't even sure what plane they have.
Some of the best deals on ebay are found by searching with misspelled terms. I won the bidding on a Garmin 430W at $900 that way. Of course the seller then claimed it was 'no longer available', and reposted it the next day using a different ebay ID.