ebay, $33.00 delivered within 24h from uglycable.com.au
it was a breeze to install using 4 of those plastic anchors that self tap into gyp-rock. Since each of them is rated 10kg and the monitor weights about 5kg, there's not much chance it will fall off
Go ahead, do it, these screens are made to be installed on the wall. The bloody leg that came with it was wobbly, too low and always managed to annoy me, but now that's all sorted.