I'm so sorry to hear this, my thoughts are with you.
I am on the other side of your situation, having lost a relative with a lot of high end equipment and a lot of media, and me trying to dispose of it in the best way possible. In fact, it's why I've joined here in the first place.
He was a music lover and had a high quality vinyl collection of over 10k albums that he planned to leave to my wife and I. We were able to persuade him a few years before he passed to sell that, as we had no place to keep it or the knowledge to sell it (you can see the story of it here https://www.youtube.com/watch?v=I4Y1RGtG5I4&pp=ygUXdG9wcGVyIHZpbnlsIGNvbGxlY3Rpb24%3D and here https://www.youtube.com/watch?v=I4Y1RGtG5I4&pp=ygUXdG9wcGVyIHZpbnlsIGNvbGxlY3Rpb24%3D)
When he did pass last year, I inherited a large amount of equipment that I have been selling over the past year on various platforms. It is time (and space) consuming. While I love and will keep some equipment, I do not consider myself an audiophile. Finding the value of much of this equipment is difficult for someone who is not a hobbyist/pro. I was fortunate enough to be able to sell off the entire Kaleidescape system to a single dealer who was a great help (more than a pallet of boxes). I'm still working on selling speakers, amps, and cables which are heavy and bulky to package/ship. While I've recently discovered TMR and would be willing to take a lower price, they aren't interested in the amps/processors as they are focused on 2 channel.
This experience is forcing me to look at all of my own "stuff", and part with much of what is more sentimental than actually used. As I don't actually want most of my parent's prized possessions, I'm sure my daughter will not want mine. I don't want to burden those left behind with the process that I am currently experiencing. I will at some point reach out to a local dealer and try to sell the whole package, but even getting to that point has taken time and effort. It's a difficult and emotional process.