I couldn't find a thread about this and I am not the creator, but is anyone using this new extension? It shows the price on the toolbar, while clicking on it will show you Buy/Sell orders, volume, Low/High and Last price, as well as a list of the last transactions. It's real time and is very quick at recording orders.
Great extension, and hats off to the creator. I've been waiting for something simple like this!
https://chrome.google.com/webstore/detail/mplfonagphbambbggaghimbbhpjhapap?hl=en-US