Depends on your area.

The balance on my bridge loan is $120,000.

Is it a straight 1.5% on the monthly rent after 5 days ($23.25)? 

I just did one for like 28k, was a little short on a closing cash purchase. 

Targeted marketing would come via social media, which is usually priced on a $ per impression or $ per click basis.  

Are you looking to focus on SF fix/flips?

Focus on the numbers rather than emotions.

Hey @Mordechai Chaimovitz - It sounds like you are talking about Chicago's NW side because there are definitely tons of areas in Chicago where a 2 flat can cashflow well.I know for me buying on the nw side was critical to my personal well-being and life happiness. 

Love it.Best advice I can tell you is to prospect prospect, you must lead generate, meet people tell them what you do, preferably face to face, but also on the phone, online etc, albeit I prefer and spent most of my time on face to face meeting and conversation.

That would be called the BRRRR strategy - there is endless info on that strategy here and on the podcasts and in the BP bookstore.