I have OLED screens all over my house - I can never tell if the monitors are on or off unless the screensaver kicks in. 0 regrets spending that money.
At a quick google there's nothing under 3k and they're either 21" (too small) or 55" (fine for console gaming but not for programming if you ask me).
Regarding size for programming, I use a 40 inch monitor and wouldn't mind additional width.
Say, are there any 16:10 oleds? :)
Edit: Hmm, one 40" 4k instead of 2x24" 1920x1200. Maybe.
Not that LG has any 40" oleds, the smallest i see (locally) is 55".
Here is the 48 inch oled from LG: https://www.lg.com/us/tvs/lg-oled48cxpub-oled-4k-tv