Well, I wish I'd read this thread before I sent my Mac mini to PowerOn. I had an offer of $125 from Gazelle, but at the last minute I saw the PowerOn offer on the Apple website and it was $195. That was a big difference, so I sent it off.
They just sent me an email saying they were now offering me $60 because of a "defective systemboard" and they attached a photo of a Finder screen with wacky color pattens across it.
I don't know who's system they took a picture of but I don't think it's mine. Either it's the wrong system, they broke it or FedEx broke it in shipping. I know for a fact that there were no problems like that when it left my house becuase I was using it as my daily system and I couldn't have used the system they send a picture of.
When I sent it in, I had all the original box as I really look after my stuff and keep all the boxes, but I was shocked at the box they sent me. It was way over sized and had already been used at least once when I got it. I put in much more packing material than they supplied too, so I'd be surprized if it was damaged in transit.
I've rejected the offer and I suppose they'll send it back to me. I'll find out then if they've sent me a picture of someone else's system or if they've broken mine, but I doubt I'll be able to get the $125 I was offered by Gazelle now.
Really, really disappointed. I feel like I've been scammed. Next time I'll take my chances and pay the fees to sell it via eBay...