The phrase "textbook market" refers to the buying and selling of textbooks. It represents the overall market and industry related to educational books used by students for studying. Full definition
This is particularly true in textbook markets, where many books cost well over $ 100. (nytimes.com)
There is also the all important educational textbook market. (davidderrico.com)
One of the main frustrations with the digital textbook market is the lack of penetration in public schools at the elementary and secondary level. (goodereader.com)