I'd never give out expensive gear on a rental site like this. If they can't really deal with people not returning / stealing cameras, what happens if they return the camera damaged? Or scratch the lens up? Sure you get money for someone to use your unused camera for a day, but how do you know that they'll treat your equipment as you would? What if they switch your camera out for one in worse condition?

The risk to reward ratio for this doesn't work for me.