I have been keeping an eye on Craigs list since the beginning of the year for a good quality used stair stepper. Heaven forbid you try and buy one of these around New years.......they go for allot of money. Anyway, as I predicted, NOW is the perfect time to buy one. Summers mostly over, and all the new years resolutions have been broken. Anyway, I found a Bodyguard Quantum model that the seller says they just bought last year, and it's in like new condition. Looks like there is a new Quantum 5 that took this models place now. I did some research, and it looks like this stepper sold for around $2,400.00 brand new. The seller wants $500.00 or best offer. My question is, does anyone know about the quality of this brand of stair stepper??? The good and the bad?? Thanks!