So I dropped by the local used game shop that I stop by every month or so and they had a Killer Instinct for SNES that appeared to be factory sealed for $29.99. I'm not really interested in collecting sealed games but wouldn't pass one up if the price was right.
I'm a complete newbie when it comes to factory seals, but I've heard enough to know to be wary of this sort of thing. I didn't ask them to take it out of the case to look at it, but I saw that it had a hang tab (easily faked I know) and a seam across the top of the box as well as a vertical seam that wrapped around the back. I looked at all the current listings for "factory sealed" copies of the game on eBay and they all look similar to the one I saw in the store.
Ultimately, I decided to pass because I've never actually played the game, so it has no sentimental value to me. I picked up a Super Game Boy and a copy of Star Fox to replace my copy that broke on me 12 years ago. Did I make the right choice?