As
@AprilWC said, it depends on your goals, how well she aligns to those, and your budget. Starting with a pen filled with high quality birds that are close to the SOP and could place at shows is an amazing start to a breeding program, if you have the funds.
I'm not sure how familiar you are with the SOP so just ignore if you are, but check toes (spacing, length, color), ask for more photos of her from different angles, be really critical of her wing feathers and carriage, make sure she has the balance and type you want. Ask for photos of the parent stock and the other breeders they have.
You may also want to ask if she's vaccinated, and what for.
If she's coming from an ABA Master Breeder etc and she'd place in a show and has the look you want, then yes, that's not a bad price. If showing and winning ASAP is your goal, then yes, you're going to be dropping some big money to get started.
She has good splash color, her crest looks balanced at this point, her wing feathers are showing a bit, maybe it's just how she's standing, make sure those are well carried and the primaries arent too long.