There's probably only one way to find out, and thats to try the code. You put it in before you commit so you'll know what you'll be up for if you go ahead. Even without the code, at $149 its a damn good buy.
I went to use my Color Efex today, and I noticed that there was a new software available in my Photoshop even though I haven't downloaded anything new (how does that happen?!). Today I just tried "Analog Efex" and I love it. Very fun for playing around with different old-timey looks. The toy camera ones are all a bit too much, but they are just presets and all can be tweaked with different sliders.