I bought a new copy of Tron: Legacy last night at Target (bear with me for a minute. It may take me a moment to get to my point). A new release this week, the Blu-ray / DVD Combo package was discounted down to $19.99. Signs advertised that I could have gotten another $8 off if I had purchased the original Tron on Blu-ray as well (although technically I see that as spending an additional $12, not saving...