I came across these Swann cameras at Costco, sold in 2-packs as add-ons for the Swann NVR-based systems. These are rebranded Hikvision DS-2CD2032's - fully upgradeable with US firmware, and carry Costco's famous, ridiculous return policy.
I've set up 6 of these on a Blue Iris system, and they work beautifully.
P.S. Yes, I'm aware you can buy the gray market units for around $100 from time to time, but an extra $15 per camera for a fully warrantied product is a much better deal in my opinion.