Real estate attorney for Multi-Family investing

[Anand S.]

Hi 

I am in the process of making an offer for a multi-unit property in Pittsburgh. I work through an agent and he has recommended that I use a real estate attorney to review the contract and make any additions, if necessary. I am an out of state investor and wondering if anyone can help with the following

1. Is this normal for an attorney to review or modify every time an offer is made? Don't the costs skyrocket?
2. What is the exposure that cannot be covered by standard PAR (Pennsylvania realtor paperwork)
3. How much should I expect to pay for these services?
4. Any recommendations for a real estate attorney in Pittsburgh?

Will be grateful for any help or advise here. Thank you