Outer Limits 4x4 Board

I have seen a few cheap bow and arrow style pipe benders around with an air over hydraulic ram.
Is that ram with air available anywhere cheap on its own?
Or do I just have to spend a few hunjy on a complete bender kit and sell my old armstrong model to a mate or something?

I spoze the question I should also be asking is do the air over models work any good too?

Cheers
Paul.

mate I saw them at a farm show for under $200. try coventry or similar

I got one last week and its awesome watching it go kajoonk kajoonk kajoonk instead of pumping that bloody handle hundreds of times.
$240 delivered.
All I had to do was swap the crap air fitting for a decent Nitto one.