I mean think about it… Somewhere in the world someone has just finished the first draft of her first screenplay, ever. You want your agent to be the bad cop, so you can be the good cop.
But if you really think you can't do that, listen to Wozy. These "services" make their money from the fees you pay them, not from a commission from the money you make selling your screenplay.
But, as you will soon learn, these so-called policies and practices are often more false than true, especially if you develop creative ways to circumvent them.
A "spec" screenplay is any screenplay the writer wrote without getting paid by a producer to do it. It really is.
On the other hand, a professional letter is quite manageable. Copyright office I live in America.