That all-new Retina 5K iMac is a sight to behold. The screen itself is awe inspiring awesome, and will definitely spoil you for all other monitors if you look at it too long. Apple’s new desktop machine isn’t just pretty, though. Under the hood, there are some mean specs that keep things plugging along no matter what tasks you toss at it. The asking price of $2,499 (for the base model) puts the dreams in check, but the newest iMac is now available refurbished — and cheaper.