Buying Materials

I met a guy who has about a million tires and he is offering to sell me the tires pre-sorted and delivered for 5 bucks per tire. Is this going to add up to be outrageous; or would the time and money saved over trying to find the materials on my own (Tricky here in Utah. Everyone is very protective of their tires) be worth the cost?

$5 each seems high to me for scrap tires, BUT the presorted & delivered aspect brings it back to 'reasonable'.

You might want to check out the 'free' section of your local Craigs List.
Around here, it seems that every day somebody has a listing for free tires.

that is not even close to being worth it. go harvest the tires yourself.  
https://earthship360.com/whole-earth-school/

Check out some of your local tire stores.
Usually, they have to pay somebody to come pick up their scrap tires.
If you do it free, that is a win/win for everybody.