Have heard lots of unfortunate outcomes from people buying sight unseen. Sounds like for the seller though it's always a great outcome for them!
With saying that, we bought a Jayco Expanda sight unseen a few years ago, from Brisbane, (we're inFNQ), payed them extra to deliver it for us, loved it, till we sold it 3 years later, to a couple from Sydney, they bought it from us sight unseen, then drove up to get it.
Bought our CYT sight unseen, had it put on a transport company and again, loved it, was actually even better/bigger in the flesh than the photos.
So I guess it a bit of a lucky dip out there...but I think we would be unlikely to do it again, it is nerve-wracking, and you really do have to trust people and your instincts, which certainly doesn't always end well.
Dee.