I can make 2 characters for you, for 200$ in 5 days. I work in Maya, ZBrush.
Relevant Skills and Experience
Maya, ZBrush, VRay, Keysot, Marmoset, SubstancePainter, UV Layout, X-Normal, Marvelous, Photoshop. I have expirience in creating models for Unity.
Proposed Milestones
$60 AUD - High Poly sculpt base on the concept
$60 AUD - Retopology Loy Poly
$50 AUD - Preparing UV
$52 AUD - Making Textures
What Polygon count do you need for one character? What textures do you need ?