1) Please check twice your document. In previous quotation, I can see that quotation is excluding most item that should be include (guarantee / installation…). So shouldn’t it be instead of exclude more “include”
2) 3000 USD for wattmeter supply and installation is almost extorsion. Installation won’t cost more normally, as price already high and installing the wattmeter is easy as originally part of the process. When it comes to the cost of the meter, knowing that it is around 120 USD to a retailer, paying 1500 USD to have it with certification also sounds expensive. Can you justify the cost of it or you have no idea from your supplier ?