Inflatable pools are generally budget-friendly compared to the cost of in-ground pools. They start at under $25 for small-capacity kiddie pools. They can range up to more than $700 for premium versions that include jets for a spa-like experience, water treatment, and filters, like the Intex 28405E PureSpa 4-Person Inflatable Hot Tub Spa. It's also worth checking to see if the inflatable pool you're considering comes with a pump, filter, or ladder, and if not, figuring those costs in, if necessary.