If you have your heart set on a Parker, Join the PGCA and become a member. Lots of nice guns with great knowledgeable people.
You will have access to the for sale area. Lots of great guns are listed if you have a little patience. Plus if you find a gun for sale else where you will get some honest opinions from experienced members.
Top that off with a discounted letter option when you find a Parker you like.
Just my opinion that Parker would have to be one hell of a 26” gun to bring $8000.