That's fair, everyone has their "amount" they'll spend on any given snake.
I give you this scenario...
I could offer you a 2000 gram female that lays 6 eggs every year consistently, she's $150
I could also offer you a 2000 gram female that laid 7 eggs her first season and then 10 her second season, she's $300.
Which do you choose?
I know if I have a powerful male those extra 4 eggs could bring me several thousand dollars or more in snakes, for only $150 more than the 6 egg layer.
Call me crazy but I'm paying the extra for the 10 egg layer.
There are many factors to consider when bringing a normal into the collection, looks, age, weight, type of prey she eats, how many eggs has she laid in the past, etc.