If the deal is worth doing consider it, but I would strongly suggest putting the EM with your attorney and not the sellers attorney. 10% is a lot, as others have said and asking for it prior to agreeing on a price would make me concerned. 

The LLC's or a web of them depending on the complexity of your holdings are primarily used to silo your assets and limit an inside attack to the specific property and away from your personal assets. n addition, it could limit an outside attack from getting to your LLC.

I'd get em out and start over with someone you pick out.

@Paul Chapey @Mark Gibbs Okay, spoke with our web dev team and made sure the link is definitely working!

Can't win em all.

Offer your web services to old dogs like me that know nothing tech. 

Hey all, I am just starting to plan out my real estate investment journey and one of things I want to be sure to have an option for is for my tenants to pay online as I feel if I set this up for the first unit I have ...

When one can go on the web, and find pages of people complaining about them, saying the same thing, it's not the students, it's the "teachers."

"Send 'em, no I don't have time to have a conversation."

Check the city's Web site, make your best guess, and then pick up the phone or go down to City Hall in person.Depending on how integrated the various city departments are, and how broke the city is, they may ask you if you pulled building permits to do the renovations for the second unit.