I was going to get one instead of the everlast chin up bar I got back a few months ago but the easydip thing was too expensive. I am not sure if it is as good as they say either, there are about five or six other sites selling the same product with the same deisgn and demos under a different product and company name. It sounds kind of sketchy.
hmm maybe I was wrong? I did a search just now and these are the only two I came up with and they are different products... http://www.easychin.com/ http://www.easydip.com/ I could have sworn that a few months ago there where several more pages selling those products under different names with the same designs. Maybe I am hallucinating or something, if you want to spend the money give them a shot but make sure to post a review for us all.