title: im taking 3 of these; I can't be bothered to put out full details, so here's the rundown
I EXTREMELY prefer models that are already rigged; If you want facial flexes, it's also preferred if the model has bones for that as well (Typically XNALara models have these, or MMD models typically have existing morphs/shapekeys)

Base price is $10.
Facial posing is $10 extra.
For every extra Survivor/Infected to put the model over, it is an extra $5 each.
Eye tracking, jigglebones, glowing textures, animated textures are complimentary, no extra charge.
Please have a model ready & readily available for download.