PowerDVD 6.0...Best Price?

I’m looking to buy a copy of PowerDVD 6.0. Any suggestions on where to find the cheapest price?

Or is 5.0 just as good? If so, please mention any sites (or link to).

I’m just looking to play back DVD video files that I’ve ripped to my HD. I have 4.0 but am having playback problems.

Thank you.

Here’s Version 5 for $3.95 + Shipping: