reading textbooks on low res, low performance tablets is aweful experience. If Im going to buy a tablet to read textbooks, I will only get it if it can load pages instantly and I dont have to screw around with the pinch-to-zoom pain in the ass to read the words.
dual core a9 isnt all that good for loading color documents on my phone, so the low res slate 7 wouldnt be of any use in the text books back to school situation. I suppose a nexus 7 would be much better. nook hd is also a decent offer in the price range.
if crap is cheap, it doesnt make the crap any good. best save a bit more and get something decent.