I agree with Mark that if possible I'd approach the store owner you purchased from for a refund or huge discount based on your findings.
As an aside, though, this reminded me of a sermon I once heard from a good friend of mine who was preaching on the Psalms. He said that some of the Psalms are prayers we'd love to say but we're afraid to ask for things like, "Strike all my enemies on the jaw; break the teeth of the wicked." Sigh. I just hope you get some of your money back, Jake.
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“Aslan didn't tell Pole what would happen. He only told her what to do. That fellow will be the death of us once he's up, I shouldn't wonder. But that doesn't let us off following the signs.” - Puddleglum in The Silver Chair by C. S. Lewis