The price-performance ratio is satisfactory for ordinary, undemanding work, surfing the Internet, but no longer for playing state-of-the-art games or working with the requirement of a large computing space. It is a device (used in the previous "life", I do not know the method of use and its possible wear and tear), which should be expected to require the purchase of a new battery, replacement of frequently used connectors USB, Jack or DVD drive. Take a look (or have them show you) a screen test, pay attention to "dead" non-shining points, or overhangs and scratches on the screen. When refurbishing, they usually also perform a performance test. Check the scratches on and around the screws, which usually indicate unprofessional intervention. Have the software also demonstrated. No antivirus or step!