weight and age

What would you say is a good length and weight for yearlings? 2 snakes I ordered were the exact same weight and length but were 2012 and 2011. Both were 16g. I'm guessing when you have many corns that are for sale feeding is done to keep them alive at minimum cost until they sell (not that I agree) but now I am wondering how far behind they really are.
So what are your yearling's parameters?

One of my 2012s is just over 100 grams - she's been well-fed her entire life. One of my other 2012s is around 30 grams - I'm not sure how often/much he was fed before I got him, but he was very small. And my last 2012 is around 70 grams.

One of my 2011s is also just over 100 grams - he was fed every other week for much of the beginning of his life and is about half the size of my other 2011s (which are over 200 grams).

Being only 16 grams for a 2011 is really small.

holy crap, my guys are tiny! Time to up everybody to five day feedings for a bit instead of 7days. I knew they seemed small when I got them

(2012?) Claire is 16" 19.2g
(2012?) Vesta is 17" 19.6g
Those two *might be 2013, they were vendor buys at a show*

2012 Mystic is 16.5" 19.3g
2012 Cedar is 16" 18.3g
2012 Dorito is 19" 26.3g
2012 Wisteria is 17" 31.2g
2012 Espanto is 21" 37.7g (and I know he was small and a late starter)

2011? Cosmo 35" 164.9g
2011? Fraser 31" 155.0g

I'm sorry I meant to post this in health, if a moderator could move please...