Does anyone have any recommendations for economically priced air bath tubs? Ideally some "good-quality basic priced unit" and not a "you get what you pay for, breaks in a couple years" model? What's the entry-level price point for air baths? (MSRP, not back-alley eBay either)

I recently received from Bain their current price list, and wasn't sure if they were selling tubs or used cars. We don't need chroma-aroma-sound therapy. Just a nice hot bath with a decent massage action.