I have a 2017 iMac that Apple will only give me $250 for if I trade it in. eBay listings for that model + its extras are going for ~$1100. This is tempting me, but I've never sold something so expensive on eBay before, and something tells me it's going to be scary. Should I go with the safe path even though it'll give me a pittance in return, or take a gamble to recoup some of the value? I paid ~$3k for the iMac originally and it's still in beautiful condition.