Rentals can become costly and inconvenient. The cost of renting a bounce house is typically double the cost of buying one. So, it can quickly add up. Although residential-grade bounce houses and water parks aren't suitable for heavy or commercial use, they're perfect for regular backyard play and are often at prices 80% lower than commercial inflatables. If you think your kids will use the bounce house at least twice, you'll end up saving money in the long run by buying one and using it over and over again, whenever and whereever you want.