Decided not to sign

Per the advice of my manager and my gut I decided not to sign with [unnamed talent agency]. They weren't a SAG signatory, which meant that their contract left much to be desired. The standard commission for talent agents is 10%, these gents wanted 15% plus any monies set aside for "representation" in any performance contract. Here's a breakdown of just how ugly that could get:

I book a SAG day-player role, I will earn:
$759 + 10% for Representation
-10% above the line for [unnamed talent agency].
-15% below the line for [unnamed talent agency].
-15% for my manager.
-33% for federal and state taxes.

= $280 out of an initial $834.90

In other words, I could be earning a really great living - but this agency would take so much of it that I'd only see about a third of it. All this just to have someone else submit my photo to casting directors. Thank you, but no.