So, in theory the trade paperback of Tribulations is up on Amazon, but if you actually go to the link it tells you that the book is temporarily out of stock. I know that there have been supply-chain issues affecting physical books, so that might be at play here (although A Dislocated World is still selling paper copies). Maybe it’s just too soon and the book has been approved but not produced. I’m going to hang off of putting up links & announcing the trade paperback until there’s an actual book that people can buy.
ETA: Now it’s up!