Sorry to hear of your loss, Stephie. Eventually it comes to many of us.
Clearing someone's workshop is not easy, even if you are a fellow model engineer. Neither easy, nor quick.
I've been involved, at least twice, and have no wish to do it too often.
Before too long, that task will fall to someone over my workshop and tools, even if I try to make some preparation..
Help from a fellow modeller will be very useful. But sometimes, a device will come to light for which the use is not obvious!
Dealers have to make a living, so what they offer will be less than that for a direct sale.
Seloling through a local M E Club may realise less that expected.
Maybe, listing and phographing everything, and then advertising on the "For Sale" on here, in MEW and ME may be the best way?
Howard