That said, I'm curious about the volume.

Volume within the market3.

I liked what I saw met with my Vendors realtor and PM.. really liked them.. green lighted it.. and just off MLS etc we are buying at least 5 a month and ratcheting up as labor allows we are not capital restrained in that market.. tax's are high and you have that POS stupidity which may or may not be stupid depending on what side of the fence your on  on that one.. .. but for a high volume gig with plenty of renters and plenty of inventory Cleveland metro fits the bill for any size wallet.. you can buy hoodies or you can buy A quality and anything in between.. 

If your list doesn't have at least 4 or 5 figures in volume, its too small and you need to just call each owner.

Are the big operators with volume getting a bigger piece of the pie? 

We get lost in the volume.

high volume**

If you are sourcing large volumes of deal flow directly from owners, you can make lots of below market offers. 

If you want to get F U money ($10mm networth & up) in a reasonable amount of time, you will need volume and capital partners.

Business Activity...I say this on several levels: The use of investment capital, growth of that capital, volume of business, and protection/separation of business and personal interests.