Amazon Deals: AirZone 55-Inch Trampoline & Enclosure Only $52.40 Shipped October 14, 2015 By: SMFMcommentShare The Savings! Here is an awesome Christmas present!!! Amazon has this AirZone 55-Inch Trampoline & Enclosure for the low price of just $52.40 (Reg. $99.99) plus FREE shipping. This trampoline is highly rated at 4.2 stars with over 150 reviews!!!