Congratulations Michael... are the in the-laws handy with a hammer?

How do you estimate something like this if you've never so much as lifted a hammer in your life?  

Ive never picked up a hammer during a rehab.

We stop and talk for a second and I propose a deal where he would give me a nonrefundable deposit and in turn I would give him the 90 days he needed, and the buyer was ecstatic and said thank you and he would 100% do that and his realtor would begin the paperwork.I call my realtor and she was thrilled we were able to hammer out a deal, then the next day, the realtor for the buyer ignored us all day long and then finally at 5 pm texted my realtor and said they would be cancelling the contract.Was my realtor supposed to take a deposit when the contract was signed?

You don't achieve financial freedom swinging hammers and painting walls.

Learn how to swing a hammer or get into one of the trades (plumbing, electrical, roofing) and you will have flippers jumping at your enthusiasm.

On the flip side, if I wanted to take a sledgehammer to one of my walls, I don't have to worry about losing my security deposit (as there isn't one).  

Thought this was a place to get help, apparently it's also a place to just hammer people. 

Thanks for the advice @J Scott and Bill Hinshaw.Turns out it seems they are hammering anyone flipping, to ensure the person in charge has a 'Home Builder's License."  

Thanks for that @Lucas Hammer.