Hello. I'm a pretty big Apple user and wanted to pick up an iMac to sit around the house for general browsing, email, some light casual games (think Terraria). I found a used iMac that the seller listed as a late 2010 model with a 3.06Ghz Core i3. In fact, it was a late 2009 model with a 3.06Ghz Core 2 Duo. It has 4GB RAM and an ATI Radeon HD 4670 w/ 256MB RAM. I paid $360 for it with the wireless mouse and keyboard. He is offering to meet me to return it (2 hour drive for me) or to send me $160 back, making it a $200 purchase. I'm a little concerned because he said this machine has had a hard drive replaced and a new screen, and the screen appears to flicker on wake up. Any thoughts?