Though it may be an oldie, the Verizon Lumia Icon is still a goodie, which makes makes this $500 discount on Groupon pretty compelling. Granted the sale is for refurbished units, it's still a massive 83% discount off of the original retail price, bringing it down to just $99.
The Lumia Icon was originally released in early 2014, and is essentially a Verizon-branded version of the Lumia 930. Interestingly, the Icon also just received its update to Windows 10 Mobile as well, making this a relatively cheap way of getting your hands on the OS if you're so inclined.
In any case, if you'd like to take advantage of this deal, you can find the phone available at Groupon in either black or white for $99.
Thanks to tribexx for the tip!