I saw these trampolines online at a variety of price points, from $300 to $2500. I was suspect of one at under $500 but thought I'd take the gamble. My friend and I were delightfully surprised to see the heavy-grade PVC material professional grade attachments. Not only did it come out of the box and blow up in under 10 minutes with the provided blower, we were on the water immediately! The cold water did soften the inflation so we had to top it off again (to be expected), and the downside is that on the water, it doesn't act like a trampoline, there's too much give, but I think that would be the case with any water trampoline. Overall, it works great as an awesome island for laying out and jumping off! .....Definitely Satisfied with my purchase.