odd how you want to know the price of spaying ANd declawing...as if they were closely related.
Declawing is not necessary. You could just take the time every 2 weeks and cut your cat's nails and then there would be no scratching issue.
Are you worried she might attack or ruin any furniture?
If that is so, then why get it? You're trying to save a life and then amputate her fingers.
Please reconsider declawing, or don't get the cat.