M.
Hi J.,
I don't know of a place who makes bounce house-shaped cakes for a decent price. For my son's b-day a couple of yrs ago, I made a shaggy dog cake. It turned out well. I used to make cakes for other people but got too busy and had stopped. However, if you would like see a picture of the cake I made, send me a msg and I'll email it to you. I'm not sure what exactly the bounce house design you would like to have for your son (since there are many designs) but if you decide that you would like for me to help w/your cake, I'd be open to it, hoping it's not really really difficult. I'll charge you less than a store for the same design. Feel free to send me a msg back but if you decide not to, it's okay too. Good luck.