Items from audiophile's estate, list and photos link provided; helpful advice appreciated!

I would look at calling The Music Room in Erie CO and hearing if they could help by selling on your behalf. They are the largest seller of used HiFi and should be able to give you a great insight into pricing and options. They also remove a lot of the hassles involved in disposing of HiFi.

If all else fails, as @sparksgja says, TMR is your default. Of course they will cherry-pick. But they do make things easy. Get it boxed and they whisk it from your doorstep, no shipping costs. 

Thanks sparksgja and hickamore!  I'll check with The Music Room and see what they think. I need to get to get some things sold so we can finish paying the funeral home and so on. Thanks for the thoughts! Have a great week!

Search n learn that a $1m system went for maybe 15% of that in a well organized auction… the unknown status of each component is a talisman to value. TMR is good for the more modern gear. 
I am truly sorry for the loss of your friend 

I've purchased three times from an estate sale and understand the delicacy of dealing with family. There isn't a place to be assertive about a pricing agreement. I do believe the intermediary support will go a long way, as made offers do not need to be made known unless the family agrees that any value offer should be presented. The intermediary can work as a filter and leave the family to process and grieve loss.

On my first occasion, I accepted an asking price and drove a 250-mile round trip to pick up.

On my second occasion, which was the same estate sale purchased from over the course of nearly a year. Two Intermediaries were involved: the individual supporting the family and others who were informed of the sale and receiving inquiries to pass on. My offers were accepted, and on two occasions I travelled a 900-mile round trip to bring home the items.

 All three occasions gave me access to audio equipment I became very, very fond of.