Good Evening, I've listed my price per tub, assuming a similar level of complexity as the linked Jacuzzi page.
This price is based on the receiving the full 22 models for a total of ~$3300 US.
Relevant Skills and Experience
3D modeling, 3D rendering, 3D animation.
3Ds Max is capable of what you require - though not the only tool - I'm able to keep my price low by using Blender, a common 3D package, comparable to Max.
Proposed Milestones
$75 USD - Up Front payment per tub
$75 USD - Deliverable of one render + OBJ file
Additional Services Offered
$400 USD - Video demonstrating basics/features of the tub, short, with labels
$75 USD - Additional rendered views
$50 USD - Additional variations on original tub, EG material change.
Is there anything that I can clarify for you? With over a decade of work in 3D, I'm happy to help