It's questionable whether the printing press was an entirely novel invention. Movable type printing had been around for centuries in China, it was just less useful there due to the large number of pictographs. In fact one of the major innovations of Gutenberg was the alloy he used for the type that was both easily workable and durable in use.

Additionally, the major change people usually aren't aware of was the spread of papermaking knowledge through Europe around the 12th and 13th century. Before that point, most books were created on Parchment, which was much more expensive. I've read somewhere that a single bible took ~3000 sheep to produce.