YRMV.
By garbage, do you mean mainly in terms of things like screen res and low CPU power?
I just found this for instance for £35 http://www.ebay.co.uk/itm/321040730821?ssPageName=STRK:MEWAX...
Which I'm sort of tempted by just for email.
"Up to 6 hours" (as quoted for that Binatone) won't cut it, I don't think, even though the hardware's otherwise well able to handle email and similar. Unless you're really assiduous about plugging it in all the time you're not using it, it'll be dead every time you pick it up!
Cheap tablets probably make excellent status boards, though, left plugged in and running a browser.
I had considered an Android tablet after Apple screwed me over on my iPod Touch 5th generation and locking me out of iOS updates (No 6.0.2 and above locked at 6.0.1) and iOS 6.0.1 causes nothing but app crashes. I am told to just buy a new iOS device to make the app crashes go away. I figure I'd spend my money on an Android to see if it would work better.