I did get it on that last sale, and it's fun with a good team of people who can stick together. It's like l4d but with crazy accurate cops, you get shot, alot, but at least you can take alot of damage before being knocked down. I haven't seen all the maps yet, but so far it's been fun, totally worth a sale price. User interface takes some getting used to, alot of important info is sometimes hard to see when you're new to it, and some less important info is blasted right in your face at the worst of times.
Really nice sounding update today, I'm definitely trying this out tonight.
News - PAYDAY: The Heist Updated
edit: finding more glitches each time I play, and partners getting disconnects and crashing. I'm staying away for now, until more content and fixes come.