Is this laptop worth it?

Before you by any used electronics, understand that there is a risk involved with it. Your close in price to buying a lower end used one without any headaches compared to one that you don't know the history. If Laptops were $1,000 US dollars on average and you could get one for $300, I would say yes. But laptops and even a Mac Mini ($599) are now under $600, so you should stick with a new one.