You are very stubborn, and that won't help you out in this situation, but I do wish you the best of luck. http://www.g3mh.com/wp-content/uploads/2016-TIC-Brochure.pdf

So, do I proceed buying this place for 70k that appraised at 72k with a few thousand in repairs and where the sellers have been stubborn?

From my experience the condo prices have been stubbornly slow to recover from the lows.

Of course, that's not EVERY home, and location, condition, and stubbornness of seller to want to list for higher than what the market would call for would play a part in the house staying on the market for longer.

If you are close to due diligence ending and have spent phase one, appraisal, inspection, survey, etc. the seller knows you are in for some money already so can get stubborn with concessions.If you only have inspection in and not a lot of attorneys fees then you can bow out pretty easily with not much out of pocket.

But 9 months ago the thought of it would have been an insult to me just because of my stubbornness and ignorance in the investment world.

I'm not sure why more investors don't think like this, either they are not qualified, stubborn, not aware, whatever, it exists and I think is an intelligent way to go.  

My grandmother was a stubborn old Italian who didn't think transferring ownership or writing a will was something she needed to do.

If you are removing stubborn hardwood that is glued to the subfloor and nothing else is working... set the blade depth on a circular saw to the depth of the flooring and cut the flooring into 1ft squares. 

@Ben Zimmerman I have often thought that the difference between the have and the have nots is how stubborn they are about sticking to traditional thinking about building wealth.