Is it common practice for breeders who breed and sell a lot of snakes to underfeed hatchlings? Maybe not exactly underfeeding, but feeding less than the normal recommended amount.
I'll often see local breeders offering snakes that they say are 6-8 months old and only weighing 100-200g. I understand that snakes will grow at different rates but that's clearly not the expected size for 8 months.
I bought one of my own snakes from a local breeder 8 months ago and he's now around the 700g mark. However, I recently visited the same breeder to potentially purchase another animal and he still had some of the clutchmates to my snake that were tiny! Maybe like 200g at most. That can't be healthy for the snakes, but I understand why people would do it in a business sense.