Pretty much the same bag as the one already posted but only $19.99 plus shipping. I have this as my GHB and it's pretty decent. Cheap, but rugged enough. Says it's waterproof but I'm pretty sure it's just water resistant http://www.amazon.com/gp/aw/d/B0083EWOLI/ref=mp_s_a_1_1?qid=1384023912&sr=8-1π=AC_SX110_SY165_QL70

Edit: does not have a laptop sleeve but for this price you could buy a sleeve and then you'd have the added versatility to leave it out if you went camping or something.