For people too lazy to click through and double check on the books:

21 novels and a short story collection - the traveler's gate chronicles is free too

That includes 11/12 books of Cradle ( https://www.amazon.com/dp/B0753FP6SP?binding=kindle_edition&ref=dbs_dp_rwt_sb_pc_tukn )

Elder Empire (two trilogies that run in parallel - https://www.amazon.com/dp/B074C78XPJ?binding=kindle_edition&ref_=ast_author_bsi and https://www.amazon.com/dp/B074CCVM2J?binding=kindle_edition&ref_=ast_author_bsi )

Travelers Gate (Trilogy https://www.amazon.com/dp/B074CCBXYZ?binding=kindle_edition&ref_=ast_author_bsi and Short Story Anthology https://www.amazon.com/Travelers-Gate-Chronicles-Complete-Trilogy-ebook/dp/B00Z92K3PG?ref_=ast_author_dp )

And his newest book The Captain - https://www.amazon.com/Captain-Last-Horizon-Book-ebook/dp/B0BXPYQD4D?ref_=ast_author_dp