Looking to buy my first fish and ski boat

hello everyone,
I”m new to the page and also looking to buy my first boat. Ive been looking at early to mid 90’s Statos’s, nitro’s, skeeter’s and triton. The problem I’m having is I cant find a website to give me values on boats older than 1999. Any and all help is appreciated. This will not be my first rodeo with an outboard boat and motor, growing up we had always had a fish and ski so Im not a complete incompetent but I’m still new enough to it that i could use all and any advice.

What specific info are you looking for?

I was pretty set on a SL190 or similar, ended up with a bigger, more fish than ski style older boat.

Super glad I did, much more room for the family.