Depends on the warranty and where you get it. Around 4 years ogo, my sister bought a Dell certified referbished laptop with a core i7 cpu, 8gb RAM and a 1TB HDD for £400. It had a hardware issue but can't remember what. It also had damage to the lid from the factory. 4 years later, she uses it everyday for university, and netflix/youtube and its still going strong. Seriously, she's a night owl, so that laptop only gets a total of 4 hours rest a day. So I'd go for it but only if its an OEM certified referbished unit.