Is it better to rent or buy a bounce house?

We bought one for my Son's Birthday 2 years ago.... It was like $700 or $800 bucks! But my sister my 2 daughters & has used it, I have a friend that has 3 girls, ( & twins on the way) she has used it!! We have used it at our Church for special occasions... We have really got our moneys worth! If you can at all I would recommend that you BUY! but shop around on-line...there are a lot of places that sell em... really look at the sizes!! Best of Luck to ya!