Marshall is known for producing high-quality field monitors. With rugged construction and features like false color and peaking filters, they are pretty much standard equipment for professionals. But monitors like the V-LCD70XP and the V-LCD651ST cost between and $1,150 and $1,600.
Now Marshall are entering the budget market with the 7" M-LCD7-HDMI monitor. This is sold as a kit including the monitor, a mini-HDMI to HDMI cable, standard HDMI cable, A/V cable, PC cable, battery, AC power supply, stand, hot shoe camera mount adapter, and remote. There's currently three models available that work with either Canon LP-E6 batteries (used in the Canon 7D and 5D Mark II) the Canon BP511 and the Nikon EN-EL3E, and each includes an appropriate after-market battery.
What doesn't it have? This model looks suspiciously like a monitor being sold by some other vendors. It's construction and the quality of the screen may not be on the same professional level as some of other Marshall's monitors. It also does not appear to have features like peaking.
One other thing to note: it's unclear whether this model is functionally any different from the model available from other sources, so you may be able to pick up the monitor for less, though you should factor in the cost of the accessories when comparing prices. There is also a version without the battery and accessories.
FINALLY: At NAB Marshall announced the V-LCD50-HDMI, a 5" monitor that has the construction and features of Marshall's high-end monitors in a smaller size, and is supposed to sell for under $600. It's supposed to be available in the fall.
B & H: 7" HDMI HDSLR MNTR w/CANON LP-E6 BATT $394.95
B & H: 7" HDMI HDSLR MNTR w/CANON BP511 BATT $394.95
B & H: 7" HDMI HDSLR MNTR w/NIKON EN-EL3E BAT $394.95
B & H: 7" HDMI MONITOR f/DSLR CAMERA (AC) $294.95