They sell tons of Bluetooth iPad keyboards for $99. I'm pretty sure there will be a market for this, just not one you're thinking of.Way Way to Expensive.... Logitech is smoking crack if they think people are going to pay that price.
I have a MX 5000 and 5500 bluetooth keyboard and mouse combo's and I have a K400 and just about 3 months ago I got a K830.
To let you know I have once with the 5500 and about 3 times with the 5000 re-paired them over many years of service (excluding PC overhauls and upgrades) and do not have them drop out like some say and they have been used at over 5 meters constantly with no problems (original media access through TV).
Then got a K400 - good but no backlight and the batteries last for ages (a good set about a year give or take a couple of months due to usage)
The K830 is a great set up, and it does have a extra left click mouse button on the left top edge.
Lithium rechargeables last me about 4 to 6weeks of use with the illumination set on low (which has been ample bright enough for me).
It cost me under $100 ($105 retail price with discount) and it is well worth it to see what you are pressing.
Overall, the only fault I can find is the not quite perfect keystroke operation, the keys are flat and take a little while to get used to after using better shaped keys.
As for the comment above, obviously they do not use their keyboard and mouse away from their computer, I also have a gaming keyboard and mouse plugged in, but I cannot take that to the lounge and watch on my TV (3D 65" 4KTV and PC both have WIDI)
I have no idea why so many are complaining, as this K830 is a great piece of kit and besides, if you want something good, you usually have to pay for it..