When you ask for any prices, be specific on what you want, inside, centre line, outside, radius, diameter.... wall thickness....
If all the info isn't there, they might just not bother looking into it.
I take it you mean 120cm?
No one over school age works in centimeters
I'd go to one of the smaller boys before Barnys or Angle Ring; if you have one reasonably local. That sort of work is 'nuisance' work to them and they charge accordingly. The machinary to do that sort of bending isnt that specialist and a small rolling company could easily do that for you for a lot less money.
The big boys know how to charge..i only go to them when a job is above the capacity of our machines and our local section bender's machines.