PortableCrane com Mini250 

Since time is money, what is the cost of assembling & erecting this device versus the cost of just hiring a crane???

What about adapting to extension ladders?

being that most extension ladder rungs are not secured with screws, rather they are a tube secured in the vertical channel. and all rungs are engineered to their rating ie 250lbs or 300. and two rungs would be used to secure crane mount, thus distributing the load over the two or more rungs designed for 250-300lbs.. didn't you just emphasize you redesigning the wheel, and pose a severe fall hazard when the clamp damages t fiberglass ladders that these will ultimately be used on since aluminum ladders are a shock hazard ?

What was the cost for one of these?

How do I order one?

how can I get one?

Why are all the crane folks GONE