Many 2015 models suffer from the anti-reflective coating peeling off. Check for splotchy or stained-looking marks on the display.
Check the cycle count in the System Report (Apple Menu > About This Mac > System Report > Power). Apple rates these for 1,000 cycles . Look for "Normal" condition; if it says "Service Recommended," factor in the cost of a replacement. how to buy macbook pro 2015
Since this model is now over a decade old, you need to check these specific areas before purchasing: Many 2015 models suffer from the anti-reflective coating