Good morning Denis,
I was looking at your products the last two days as I have a rather large up coming job with medical requirements. I understand your business is new but I offer three pieces of advice.
1. Offer all of your products in as many formats as possible (Max, OBJ, C4D, FBX) and with as many render engines as possible (VRay, Mental Ray, Maxwell). I'd suggest you sell all formats as one package all the time.
2. Keep all of your models as generic and versatile as possible. Less pointing and odd poses and more everyday poses - sitting. Maybe have each model perform several poses in your capture rig.
3. As you move forward add try to add content that is industry specific such as ethnic, medical, sports, entertainment, business. Group your packages this way.
Good luck.