hey so i am in the market of buying an imac. Currently i was looking at the 21.5 model with the nvidia card which is 1499 plus tax. I was thinking of getting it next week. However now i am in this situation: my brother's girlfriend is selling me her imac. This is the specs. She has rarely used it. My brother was able to talk her down to sell it for $500. I told her that i was going to think about it since for 500 i find it to be a steal but then again i dont really know much about the specs. i need you guys opinion if you think its worth to purchase it or just buy the imac from apple. Please be honest. Thank you. Here are the specs:



