The Thinkpad link that was shared below looks pretty nice, they tend to be fairly cheap and easy to get replacement batteries and parts. There’s a lot available in that $150 to $200 bracket on eBay. Edit: I just saw it’s 14", so a bit bigger than what you wanted. You can filter by screen size and price on eBay to give you an idea of what you can get. You may need a new battery depending on the age, so keep that in mind.