My mom has my old Core 2 Duo iMac that is about 7-8 years old and it is finally dying. She just uses it for email and we do stuff like buy plane tickets and print recipes when I come over. Any suggestions please on what to buy her and where to buy it? I could buy any old iMac off eBay but I would prefer something that is sold by an reputable reseller as versus someone's random used computer. Any thought on this, please? Thanks.