LightInTheBox offers the Hikvision 4-Megapixel WDR Dome Network Camera for $99.99. Coupon code "KUPON10PL" cuts that to $89.99. With free shipping, that's the lowest price we could find by $7. It's available with a 4mm or 6mm focus and features a 1/3" color sensor, 2688x1520 resolution, 100-foot infrared range, and support for Android, iOS, and Windows.
Uncheck "Add Shipping Insurance to your order" during checkout to remove the 99-cent fee.