If you live somewhere you can visit or order from a Microcenter and consider a great value enough reason to use a TN based display then check out this deal on an AOC U2870VQE 28" 4K LED display. Currently only $349+taxes you can get a 4k display for your computer or to stream to from your mobile device. Again, at this price you cannot expect either adaptive refresh rate technology but for roughly the same price to pick up an IPS based FreeSync or G_SYNC monitor of comparable size you can grab three of these displays. Connectivity includes VGA, DP, Mini-DP and HDMI (MHL), the latter of which is compatible with mobile devices.
The display is sold as a 10-bit panel, in fact it is an 8bit panel which uses Frame-Rate-Control to up the number of colours to 1.07 billion but frankly unless you are using this for professional purposes you are not going to notice any difference; except the price of course. You can see the full news release below the fold, or just click on that link to order one for as you might expect, the supplies at this price are limited. Otherwise you can keep saving your pennies for a 4k IPS display with true 10bit colour and one of the two adaptive refresh rate technologies.