[6gvONxR4sf7o]

They jump up in price pretty quickly as size goes up. The cheapest 5+ inch display I found at your link was over $40, and it's about 100PPI. It's certainly not prohibitive, but certainly priced high compared to "just jailbreak a kindle" for any remotely kindle-comparable display, right? (remotely comparable in size and resolution)

[FrecklySunbeam]

I imagine the Kindle is sold as a loss leader, plus whatever economies of scale/negotiating Amazon does pushes the price down heavily vs buying a single unit from an electronics retailer