Sorry, no matter what features, I can't imagine paying $300 for a 21.5" monitor...
Is the touch screen tech really worth turning $150 to $300?
For photoshop and the such, a tablet would still be used anyways.
I honestly fail to see were this is any better than a tablet PC (essentially a bigass iPod touch), or a normal tablet (for you photoshop Wacom junkies).
A tablet PC atleast you can hold comfortably, while a screen is right in front of you.
The only possible use I can imagine is product demostration...