Avatar matters when comes to designing better garments in MD. This custom base mesh (Avatar) is anatomically correct based on the scan data. Fully symmetrical for rigging or posing purposes which can be later used in MD for morph target.
It is a subdivision level 02 from Zbrush, which is perfect polycount for Marvelous Designer's workflow. It also can be reconstructed to subdivision level 01, if needed inside Zbrush.
Please, do not re-sell the same product.