If you're in the market for a phablet with an amazing selfie cam (God, I hate myself for using those terms), you'd better check out the Sony Xperia XA Ultra. The 16MP camera up front has a higher resolution than most smartphone rear-facing cameras do. Now, you can pick one up on Amazon for under $300 with a free 64GB Sony microSD card.
The XA Ultra (which I'll be referring to as the Ultra from now on) is a very strange Xperia. It's got a 6-inch 1080p display, almost no side bezels, a MediaTek processor, an OIS-equipped 16MP front-facing camera with flash, a 21MP rear-facing camera (with no OIS, oddly), a tiny 2700mAh battery, and no water resistance.
But if selfies are your life, the Ultra is probably one of the best phones you can get. You get nice, high-res photos with less blur and more functionality at night, and a huge display to view them on. In addition, you can use the included 64GB microSD card to store more of those magnificent pictures of yourself.
Currently, only the Lime Gold model is available, and there's no Prime shipping. However, considering that the Ultra retails for $369.99 (and is currently $329.99 on Amazon), this is a pretty nice deal. Keep in mind is that this listing does include a US warranty.