$180 for a hose is a rip off and way way way overpriced, powered or not. Vacuums also depreciate quickly, so it's not worth spending so much money on it when in 2-3 years it will only sell for $30 or so. I never pay over $20 for any vacuum parts.
Best thing you can do is look for a flexible tape that won't peel off as you move the hose, something like teflon tape, that will fit between the rungs of the hose and get in there to seal it. Maybe that heavy duty strapping tape for shipping, those I think come in really narrow widths.
It's worth the money to buy it as it's still a new vacuum. If it's still under warranty, you can see if you can smooth talk them into getting a free hose, but they'd likely need all the purchase info.