Most vendors are just retailers/resellers. They are not actually breeding or raising their stock/inventory. There were a few breeders there and as some have mentioned, their animals looked great.
This is akin to any other animal in the pet trade. $$ becomes the priority and quality takes a back...
The Long Beach Chapter of the CA Turtle & Tortoise Club will be having a hybrid meeting (in-person and Zoom) with William of Kapidolo Farms speaking on tortoise nutrition.
Please feel free to check it out.
Zoom Meeting Link:
https://us02web.zoom.us/j/81878069960