Selling my broken screen AT&T One X.

So I'm going to be selling my AT&T HTC One X which I bought at launch and now has a cracked screen (picture attached) so I can get a Nexus 4 when it comes out. The question is, should I get it repaired through HTC first for $210, effectively turning it into a new phone, and then sell it? What price do you guys think I could get for it in its current state, and what price after a possible repair?

Thanks for the help!

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via i.imgur.com