Lawyer and Accountant Fee Structures

Does anyone know what it should cost to have a lawyer review the PPM and create a Purchase Contract/LOI?  How about the cost of having an accountant review the financials (official or unofficial audit)?

Additionally, what are some ideal fee structures that could be set up with the lawyers/accountants?  I'm a self funded searcher and want to minimize costs as much as reasonably possible.  I've heard that guys will defer their legal fees untilredacteddays post acquisition and the cost usually ends up around $10k if you do much of the work yourself.  

I'm curious to know what payment/fee structures each of you have chosen or plan to choose with your lawyers and accountants.


I greatly appreciate any insight you'd be able to provide.

-Gus Gabel