HP Envy 27-inch 4K UHD Monitor w/ USB-C connectivity
$435 @ Amazon, shipped free
https://www.amazon.com/HP-ENVY-27…hp+envy+27
Probably a great monitor if you have a new 12" MacBook or a 13" MacBook Pro with USB-C.
If you have a 15" MacBook Pro w/ USB-C, note that this monitor only outputs 60W, which isn’t enough to charge consistently under all workloads, so this may not be what you’re looking for.