Could you explain the Ekinox INS options in Bathyswath-2 price list ?

The main goal of Bathyswath-2 system is to propose a fully integrated bathymetric solution to ITER systems customers at relatively low-cost

This is why we propose to install the Ekinox INS, as an option, inside the Wet-End Unit of Bathyswath-2 system

There are 3 prices for the integrated INS in Bathyswath-2 price list: