^^^This is right...I have an '09 female that has yet to hit the 700 gram mark. She is definitely a female and has zero issues other than she is a picky eater. She is perfectly proportionate, not light or underweight. So age and sex are not good indicators of what weight should be, and picky eaters can be perfectly healthy snakes...though they are also a HUGE pain at times.
In your case, if you're looking for a breeder, I'd keep looking...spiders with size are easy enough to find.