My late '10s are about 200-300g
my '10s that are now a year old are from 500-900g
Really depends on the snake and how often they dont miss a feeding.
Right now my spider female from '10 is an absolute PIG and never misses a feeding, she is growing like a weed! I bought her as a trio with my pastel male and female mojave in may, and she is 200 grams heavier than them now. They used to all be the same weight when i got them. Shows how a good eater will grow.