Offer air-water heat pump including underfloor heating, ok?

Hello everyone,

I have an offer for the heating system here.
The house has about 140m² + basement. In the basement, all rooms except the technical room (about 20m²) are heated with underfloor heating.

Vitocal 200-S AWB 201.C10 7.7KW
300l domestic hot water tank

Price of approx. ~28400€

The price refers to underfloor heating, air-water heat pump, storage tank, and complete installation.
Is the price OK?

The offer comes from the [GU].

I find it too expensive - you should still negotiate with the [GU]...

Thank you for the opinion. That confirms my gut feeling. Anyone else?

Also think that it is very expensive. We pay similarly but for a brine-water heat pump including drilling.

Including drilling even?? Now that's a statement.

Yes, but no storage and no basement for that.