I got one for $25 at a garage sale (and passed up many others because they didn't have features I wanted like incline, folding, brand name etc) and laid some cu

I got one for $25 at a garage sale (and passed up many others because they didn't have features I wanted like incline, folding, brand name etc) and laid some cut plywood across the arms for the desk portion, my monitors are mounted over it on a shelf. Works perfect (this is my second), just vacuum it every once in a while and use a treadmill maintenance kit (code for grease it). Non-pro treadmills are like pianos in that some people will just give them away. You don't need anything fancy. Also, like the author says, faster is better, I also find a slight incline to be helpful. Normally I do a few hours (2-3) at 4.5% incline and between 2.2 and 2.6 mph.