I was introduced to Green with the Deathstalker series of books which were really good so I can highly recommend them! I'm not sure if Gideon Sable will be for me but due to liking Deathstalker and it sounding a bit like The Stainless Steel Rat (which I love) I'm going to give it a go. I love a good space opera!

Buy Mort is a satire based around an all encompassing shop front that basically takes over the universe. Earth wakes up one day to find that everyone (people and animals alike) have had this shop front implanted into their head that gives them the ability to both buy anything you could imagine and sell anything around them, as well as having incredibly intrusive adverts beamed directly into their minds/vision.

It is described as a "lit/RPG" and has very heavy tones of being written as if it were a sort of sci fi role playing game, using the kinds of terminology you'd find in role playing games. From there I guess it is a kind of social commentary / satire on the way this world is going with corporations like amazon taken to the extreme where buy Mort takes over in the universe and destroys civilisations as well as planets as it spreads throughout the universe.

I went in blind knowing only the title pretty much but have absolutely loved it so far and would highly recommend it if what I said sounds appealing at all to you.