According to Zillow and my own research in my area prices are stabilizing even decreasing a hair.  

The vacant half is configured as a large high-end hair salon, the other half is occupied by me.

Sellers have to asses odds when choosing a buyer (do they have a good broker and support system, do they have the funds ready to go, is their proposed loan terms reasonable for the market are they trying a hair brained loan that has a little chance of happening?)

I'm pulling my hair out.

You’ll get zero appreciation in Erie and the clientele will be young single mothers with neon green hair and seven kids from seven different dads  

When I went out to inspect, found he didn't have the energy to shave and get a hair cut either.

Getting a single large client can be great - but that person will quickly realize that they have you by the proverbial short hairs and can really jerk you around if they want to.Also, if you grow quickly and suddenly need to add people, getting paid after work is done can really create a cash crunch if you need to meet a weekly pay roll, or if you're suddenly consuming 500% more gas, consumables, materials, etc...

  I have a inherited tenant who ive been dealing with for about 5 years and Sadly I believe that they have just finished pulling the last hair off my back.

You are sounding very agist and sexist.....Eta: they have lots of work opportunities because that kind of work is needed everywhere - so it would be easy to get a job - kind of like a hair dresser, accountant, etc  

But that is laser focus!