I bought my Mustang for $180. Prices change, Defender and other stores have sales, it just goes that way.
My biggest issue with inflatables, which was especially bad with Mustang, is a size of the neck part - it is very tight around the neck, when inflated. I had it on over a t-shirt and the thing almost choked me. If the thing is worn over a jacket or some sort of foul weather gear - it will be worse. And I am not a particularly large person either.