Our family has owned this unit for several years. It remains plugged in and ready to sharpen. I researched sharpeners fairly extensively before settling on this one. Had also tried a few others which had failed or clogged or had the motor die unexpectedly. So far this Teacher Pro Electric has done a great job! We have not stressed it, but it seems to be a solid performer sharpening each pencil quickly and dead on center. Huge capacity shaving storage compartment. Solid and heavy, it has a high build quality - perhaps more than a household needs, but appreciated!
Likely its best use is in a classroom - it has that feel to it, that it could easily withstand regular and long-term use.