I am sure that these sales get planned way in advance, but I think it would be a nice gesture for his family and for those who still are not familiar with his work to make Heiser the focus of an upcoming sale. Maybe it could look like...
Author Spotlight: Heiser
Topic Spotlight: books that Heiser recommended on his drmsh website section recommended reading
Free Book of the Month: What Does God Want?
Then the +1 and the +2 could be I Dare You to not Bore Me and the Bible Unfiltered or the Hermon
Then maybe a few big packages that would somehow support his family (though I know Faithlife has already been generous with those live streams last year):
a book package with his best sellers, a mobileEd package with his master collection of Heiser videos in one deal, and for the biggest item, his special Unfiltered base package that was advertised a few years ago.
I personally already have almost everything mentioned above. basically I have everything he did with the exception of some mobileEds.
Just an idea. But as Rueben's comments in the blog post said with what his book did for Lexham, and when you look at what has been in the top 10 for years now (several always by him near the top), it's hard to think of Logos without thinking of Heiser.
I assume March will be some kind of Madness sale; I bet it would bless his family--when the family has gone and Drenna's house is a little more quiet, do this sometime in a monthly sale this spring or summer.
My two cents (though I admit I know nothing about how publishers, sales process etc work).