Engineers from ifixit.com disassembled and analysed a range of consumer electronics products, awarding each a repairability score between one and ten. Ten is the easiest to repair. A device with a perfect score will be relatively inexpensive to repair because it is easy to disassemble and has a service manual available. Each device is scored based on how difficult and time-consuming it is to disassemble and reassemble the product to fix or replace critical components. Points are docked where proprietary tools are needed, and points are awarded for comprehensive service manuals and wide availability of parts. E-readers released by this company in 2023 scored 5 points out of 10.