A bunch of great gaming monitors are on sale for Prime Day, including the Samsung 34-Inch Odyssey G5 Ultrawide. Now listed for $265 (was $400), this is one of the better deals we’ve seen for the monitor this year. Along with tons of high-end specs, it’s pretty slick-looking, too. Like most products in the Odyssey lineup, it features an all-black design, aggressive angles, and a stand that allows you to tilt the screen (20 degrees of vertical motion) to find…