Beware: I would not click on this posting...
I cannot find an Airstream listed on eBay for a bid of $8500 nor an auction ending July 12. This looks like an email meant to get you to click on it and voila! You get some nice new undesirable software straight into your computer.
If I'm wrong, I apologize but you'd think you'd be able to find it by going direct to the bay.
Tow Vehicle:2016 GMC Sierra 2500 SLT with Duramax Diesel
Trailer: Hunting for a late model Classic