I noticed that people who are great at buying houses, should not spend the time rehabbing the house.

Before you go spending money to join a club whose value you cant determine, how about you start hitting some of your local REIA clubs and meetups? 

So if he shows up on site, needs a $100 Item say a door, then I am now billed $110 door plus the whole time spend on the door from showing up until leaving after the install so including the shopping time.

Honestly, I wouldn't bother with spending marketing dollars on something like as a new agent.

How do y’all usually go about approximating rehab costs to quickly see if a deal is worth spending more time on?

You can easily spend over 10k on buying points, which make your closing costs an upward of 15+k, not including your prepaids and escrows.

@Faith Roberts - Staging is the best money someone can spend on marketing their home/unit. 

If you go down that path, spend some money to have an agent or lawyer review the paperwork to make sure everything is in line.Another option to consider is to drive through the neighborhoods you want to live in and scout out properties you would be interested in.

How to find your FI number: Determine your annual spending in retirement, yes, you need to have a budget!

How to find your FI number: Determine your annual spending in retirement, yes, you need to have a budget!