The commercial units some apart at the place where the ramp ends, and the place where the scoring circles are. That makes it quite easy to move. There are four large bolts that hold the two pieces together. It is also around 28 inches wide so it fits through a standard doorway.
The surface that the balls roll on seems to be very sturdy. In fact I called Skee-Ball Corp and asked them what I should clean it with, and they responded that since they cannot name any commercial products, they recommended cleaning it with a certain cleaning product that has three numbers above 400. (Kind of cute)
I applied the cleaning liquid (409 for the not so fast who read here), quite liberally to the surface, and it came out nice and clean, so it seems to work just fine. When I cleaned the surface, it cleaned up nicely, but does not look new. It looks "broken in", and quite acceptable to me.
The back part (where the balls land) was just as easy to clean, as it had probably 10 years worth of seaside arcade grime in it also.
All in All, worth the money I paid, and I have certainly gotten more than that amount of use out of it.