This Intex PureSpa Inflatable Spa drops from $379 to $329.99 from VM Innovations via eBay. Plus, shipping is free. This is the lowest price we've seen to date by $10 and is a current price low by $19. It features 120 high-powered bubble jets, a built-in hard water treatment system and can seat four people. It also includes two filter cartridges, a carry bag and a insulated cover. Sales tax is charged in most states.