Instructions
Visit various bounce house establishments in your area. If they are not selling now, give them your contact information in case they have a used one to sell at a later time. These establishments have to replace these bounce houses every so often. With a little handiwork, you can get one of these used items looking and working like new.
Search online for places that sell them to the public or online auction sites. Those can be shipped to you for a fee, even if they are not local.
Keep an open mind. You might find a used bounce house or even a waterslide or obstacle course bouncehouse for sale. They are just as fun for kids and adults. Plus, you can make loads of money renting them out to people on the weekends. Your investment can pay for itself in a matter of months if you market your bounch houses correctly.