Most resellers won't even take sealed game. I know around here that Gamestop won't buy a game that's sealed, period, and the other places that buy them make the customer open the package before accepting the sell. They can't sell them as new, regardless of the packaging.
I did get this (and opened it and played it last night), and it taught me two things:
1) I love the Iron Patriot Minifig
2) I am absolutely gawd awful of LEGO video games. My daughter needs to get older so she can play through some of these puzzles for me
If the above post didn't offend you, you're probably reading it wrong.