But I AM a legal professional ... and as I said before, you don't have a case. Contradictory commercial claims are not actionable unless some damage has been suffered. The cost of a DVD is not going to get you a day in court.
Sorry, but that's my professional opinion.
If you want to do it just for publicity, go ahead and file the legal papers ... and then and then call every paper in town and beg them to print a story.
Good luck, bud.