System will retail for $50 more than the original model
www.nintendolife.com
Now, while I doubt this to be true and the hardware improvements likely cost a bit closer to the $50 extra that the OLED model costs (due to costs not mentioned, like the metal frame on the interior of the OLED), it does indicate that the extra price probably only exists to ensure that OLED Switch offers the same profit per unit sold as a Switch or Switch Lite, which was estimated based on teardowns to be $20-40 per unit back in 2017. Who knows what their profit-per-unit is now, probably closer to $60-100 thanks to greater production yields when transitioning the entire lineup to the 16nm Tegra X1+ "Mariko" instead of the standard 20nm Tegra X1 used at launch and overall decreases in all component parts over time.
If Switch OLED sells really well, I could see Nintendo establishing a $350 retail price baseline for the launch of whatever you want to call what comes next.