VM Innovations offers the Intex Inflatable Jump-O-Lene Ball Pit Castle Bouncer
, model no. 48259EP, for $61.95 with free shipping. That's the lowest total price we could find by $5. It measures 69x69x53" and features a maximum weight limit of 120 lbs.
Update: As a reader found, Walmart has it for $49.97 plus $7.97 for shipping. (Free Site-to-Store pickup is also available. Sales tax is added where applicable.