IT all depends on how many snakes they have... if you had 100+ snakes you would probably have a hard time remembering specific snakes "specs" so to speak....
All of the BP's that I have purchased were in the 120-250 gram range. the oldest was 3.5 months old at the time. Some BP's do grow slower than others, but the average hatch weight of a BP is about 60 grams and most will put on weight fairly quickly. (mine seem to put on about 50-100 grams a month on average)
All that being said, all breeders are not created equally. finding a good breeder is the moist important thing when purchasing a BP (especially your first BP)
Here are some that I have dealt with in the past and are considered to be trusted in the industry:
http://www.jkobylkareptiles.com/
http://www.ralphdavisreptiles.com/
http://newenglandreptile.com/nerd/
http://pythonregius.com/
Something to remember when dealing with big breeders is that they can't post all of their snakes on their sites... so if you don't see something that you like shoot them an email or give them a call, chances are they have what you are looking for.
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