I just ran a quick Google search; an OEM copy of
Premiere Pro CS6 (Encore NOT included) is $99.95. The entire OEM
CS6 Master Collection (every program in the suite) is $299.95.
I have never purchased from that company, so cannot attest to how good/bad they are. When I upgraded to CS 5.5, I actually went through Adobe, not realizing the "CC" pricing was just around the corner. In hind sight, I would have gone with OEM myself. I did, however, call Adobe to ask about the OEM copies and they said they are legit, but do not qualify for "upgrade pricing," which is no longer applicable with CC.
There are a couple tricky workflow things with Premiere Pro, and Dub actually clued me in on the most important one starting out... when importing a video, you have to
cancel that initial project setup dialog, import the files, and then drag a video onto the "Insert new timeline." That makes the project conform to the video, and is not something obvious at all.