Just my 2cents!
I had the CM 760 from Hare and Forbes. You couldn't bend 1mm Zincanneal at full length, it distorted the sheet and just flexed the machine. It was great for small strip kind of work. No wider than 400mm
The Guillotine side was also useless, just bent and pinched in against the shear.
No matter what I did to adjust it it didn't cut the mustard.
I never used the roller...................so there is a ? mark.
You get what you pay for and your much better off going for quality.
Like you I purchased that unit on price and saw it as a entry unit into fabricating parts.
I agree price is a Big factor on doing the little stuff, but there is nothing more frustrating than doing a job and it turns out poor because of cheap equipment....
You may as well do it all by hand tools.
Good luck