retouch jewelery

i do photography for jewelry items in a different style
gold, diamond
i want to do full retouching for photos and make white background with shadow
budget 1.5 usd per photo.
i have monthly 200 photos
sample here: https://www.dropbox.com/sh/iel8u7ibq2k6f1g/AAAb9_enLzqoc8qKYXhSB_a9a?dl=0