ive seen them wanted to buy one, BF said no more crap in house ha haa, i've heard reviews that they are quite flimsey (sp), but good.
sorry no help at all, but i would like to know as well.
I was given one of these by a neighbour she had it sitting in her house for ages and its just sat in mine for just as long,
It is so flimsey and takes soo much effort for a work out you'd burn just as many calories walking to the shop