Sad news on the odometers!
My smallest has been 295, my largest 850. I once calculated the average of 12 hedgehogs I have had and it was about 600g. But I have had larger than "average" hedgehogs over the years, if I recaculated with the last 12 it would be much lower due to the two 330 g "minis" (my own term, they just feel tiny to me). The largest I've ever met was 1100 grams.
Now that 850 gram hedgehog of mine was a bit fluffy, but when she passed she was somewhere around 725g and was skinny. She was just a massive hedgehog.
If they have the thinner runner body style (they kinda look like twinkies on stilts), I have often found the hedgehog to be a bit on the lighter side.