This Realtree SaluSpa MAX-5 AirJet Inflatable Hot Tub drops from $379.99 to $299 at Walmart.com. Plus shipping is free. This is the lowest price we could find by $50 based on anything comparable. It features a digitally-controlled pump and an AirJet system. It can fit four people. It comes with a cover, chemical floater, two filter cartridges, and a repair patch. It can heat water up to 104 degrees Fahrenheit. Sales tax is charged in most states.