I bought one of these new, last year for about 1,200 on Ebay to save my back when moving machines up and down the stairs by myself. The four roller wheels are actually very helpful when negotiating the machine to where you need it to go but it takes a little effort to get the machine onto the platform. I usually put it against something solid so it won't move and then tilt the machine back and shimmy it onto the platform and strap it on with a ratcheting strap (the seatbelt they give you really doesn't work very well for pinball machines). I did cut out a piece of wood and fastened it to the platform with brackets because the metal bars offset the machines that have the two long wooden braces on the bottom of them. Also, when bringing a machine down the stairs, I don't pull out the locking mechanism to bring the treads out further from the handtruck, I just leave them in the closed position. I hope this helps!