I still evaluate query letters and hooks -- anything up to half a page. For $100, I'll tell you what I think of your concept, and how you're selling it. I'll try to figure out how to phrase your query better, and suggest ways your concept might be stronger or fresher or easier to sell.
Nothing sells a screenplay faster than a great hook.
If you do need a script analyzed, drop me a line; I know a good script analyst.
You may want to check out my books if you haven't already:
Crafty Screenwriting: Writing Movies That Get Made covers the elements of writing for the big screen.
Crafty TV Writing: Thinking Inside the Box adds what you need to know about writing for TV.
You can also check out my blog, Complications Ensue.