Single-family house roof truss costs classic gable roof 170m2

hello community,
we have just received an offer for our roof structure.
4500 euros ( Komplettpreis ). what do you say about the price?

single-family house
classic gable roof without dormers
two roof windows
roof area 170 sqm.

looking forward to your answers

What do these 4500€ include? Delivery and installation of the roof truss incl. battens with underlay, nail sealing tape, counter battens, S10 roof battens, wedge eaves boards, front and verge boards, cornices etc?

Regards Holzmichel

Yes, exactly what is included there?? At that price, I guess it will only be the roof structure and the tying!