?serenelife serenelife 8ft 10ft 12ft 14ft outdoor trampoline for kids and adults – astm certified heavy-duty backyard trampoline with safety poles, net enclosure, and stable anti-rust frame 12ft regular is up for auction in Patio, Lawn & Garden. The current bid is $1.50, 100% below the $320.99 MSRP, in Good Condition. Bid on this item at our Cincinnati - School Road location before the auction closes.