Yeah, obviously that's an expensive option but someone who spends a lot of time in on the highway in the winter or say a Canadian bush pilot might find it a lifesaver. You could get one behind the seat of a truck were you couldn't fit a regular bag, for instance.
I don't have one of the vacuumed bags but I don't rule out getting one eventually. I have two Wigggy's bags and can't say enough about the quality.
_________________________
“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman