I never tried them. Maybe I should, but lack of space was the key. What I was told is it was all the broken ones that might have been simple fixes. But yet is was years and he didn't remember. All he knew was when he sold the biz, the new people didnt want them for parts. So they sat for years for whatever reason.
Here is some pics for ya perusing pleasure
http://img256.imageshack.us/img256/6520/sam0976w.th.jpg
http://img269.imageshack.us/img269/4844/sam0977x.th.jpg
http://img823.imageshack.us/img823/7383/sam0978l.th.jpg
http://img502.imageshack.us/img502/8743/sam0984.th.jpg
http://img266.imageshack.us/img266/6673/sam0973.th.jpg
And this is only machine I saved. No key, but its open. So easy to change lock. Completely mechanical in nature. Not sure if you can change the price or not. It's set at 60 cents, Was snowing at the time, which is why there is white specs. Gonna ask 200 or best offer for it.
http://img521.imageshack.us/img521/1442/sam0980l.th.jpg