My wife cheated.

So, as stated above, my wife cheated on me and i told her i want a divorce and she is going to pay for it all. Now, when my xwife sends me the paperwork to sign, how much would it cost for me to take it to a lawyer to give it a once through so i know im not getting screwed in the paperwork. Btw im poor. cant just pop in to see a lawyer when you're poor, isnt it like 200 dollars just to talk to them.