Yes, that is the gross price. Hm, the house has 9/10 rooms plus kitchen plus bathroom plus attic and basement. But she didn’t ask about that. The offer applies for 5-7 samples, asbestos/dust, asbestos/solids, asbestos/plaster, PCB, PAH and mineral wool will definitely be determined.
Our friends had bought a house built in 1962 with 5 rooms and paid just under 900 euros for a prior examination with several samples. It was billed by rooms. Your offer seems quite high to me. Therefore, I would obtain 1-2 more offers.