The Buying Game was written by Ababael Timsar-Dadisun. It is a most informative book, and upon reading it the Dragonborn will find themselves more skilled in the fine art of Speech.
It can be found in a number of places across Skyrim.
Ambushed Khajiit Caravan, in one of the trailers.
The Bard’s College in Solitude. On the top floor, in a teaching area of sorts, on the left set of shelves at the back of the room. It is on the top shelf of the one closest to the wall.
Dead Men’s Respite on a rock next to a candle light and behind a trap.
Inside the East Empire Company Warehouse. Up the first ramp, across over to the next set of shelves. It is on top of a crate.
Shrine to Peryite on a bench a few feet from the shrine.
Reading by Galev (@galev_ph)