[motocrawler]

Hi and welcome to the hobby! If I am not mistaken those crane trucks are one off machines created by skilled hobbyist/craftsmen. I am not aware of a company which makes these so the cost for one would be astronomical since they are one offs (probably close to $10,000). However that being said you can always buy a Tamiya Semi truck kit and retro fit it with a Bruder Crane truck. You can have the booms and winches work on micro gear motors,etc. I actually just built one for my son this way and it is remarkably functional, scale in appearance and heaps cheaper...with a new tamiya kit and misc parts I am close to $900-1,000.