First Pentium Pro!!!

The 486 machines are still in abundance. Many people do not realize that the reason Pentium Pro's are so rare is that they were only made for 3 years, and mainly used in servers. The 486 chips were made for twice as long and used in lots of home computers. Intel was still making 486 chips(non ceramic) for use in embedded systems up until 2007.

You would be amazed at the age of computers people are still using. I picked up a bunch of old compaqs that were just retired from a montessori school last week. They were window's 98 machines with amd ceramic chips in them. I can't imagine they had much fun with them.

Monday morning with coffee and donuts, or a hour before closing with cold beer and you will be his first priority.
Did you leave a business card? maybe he wanted to google you first to see if you were legit.
once he figures out that he can make 50-70% of thrift store retail selling to you and only having to deal with one person, you will have all of his scrap/salvage business, but it's all in how you market yourself.
what I've found with thrift stores that are locally owned you need to sell them on the idea that they spend 5 min dealing with one customer to make $20. they spend 5 min dealing with you and it's a couple hundred, + they have more storage space free for other items. once you establish the relationship (donuts/beer) you will have all those PP's by the end of the week.