MacMall offers the HP ZR24w 24" Widescreen LCD Monitor (pictured) , model no. VM633A8#ABA, for $300.99. This $50 mail-in rebate drops it to $250.99. With free shipping, that's $49 under last week's mention and the lowest total price we've ever seen for a 24" IPS screen. (It's a current low by $100.) It features an IPS panel with 1920x1200 native resolution, 5ms response time, 400 cd/m² brightness, four USB ports, and DisplayPort, DVI-D, and VGA inputs. Rebate expires September 30.

Update: Of note, MacMall also offers the HP ZR22w 21.5" Widescreen LCD Monitor, model no. VM626A8#ABA, for $171.99. This $50 mail-in rebate cuts it to $121.99. With free shipping, that's the lowest total price we could find by $67. This monitor features a 1920x1080 native resolution, 1,000:1 contrast ratio, 8ms response time, 210 cd/m² brightness, four USB ports, and DisplayPort, DVI-D, and VGA inputs. Rebate also expires September 30.