The only "good" movie in this stack of Awful Awesome is The Day the Earth Stood Still. I should probably explain the other ones...
Teenage Mutant Ninja Turtles II should be pretty self explanatory. It features a performance by Vanilla Ice. That made it worth the dollar alone. Its a pretty awful film. The Turtles definitely lost their charm without Corey Feldman doing the voice of Donatello, and the exclusion of Casey Jones and a different actress for April O'Neil certainly didn't help.
Cyborg is a guilty pleasure Jean Claude Van Damme movie. It was one of the first post-apocalypse movies I saw as a kid, and is partly responsible for my love of that genre. Its also famous for recycling the movie sets originally intended for the never-filmed sequel to Masters of the Universe (the He-Man movie).
Beastmaster 2 I bought for two reasons. One, its never been released on DVD or Blu-ray, so this is the only format its ever been available on, and probably always will be. Two, my woman HATES Beastmaster with a passion, and she hasn't even seen it. So as a joke, I bought Beastmaster 2. It was $1.50. Some jokes are worth it.
Money well spent, wouldn't you agree? Catch ya on the next haul!