I saw one in pristeen condition on eBay for 250 and one for 330.
I have 8 gigs on my iPod.
From a quick search online, the phone is selling for $300-400 brand new unlocked. It would make sense for a pristeen condition one to be just a bit less than a brand new one. You said it's not pristeen though, it's
in good condition
That being said, it was released in may of last year. My Galaxy Note 2 was released at the end of last year. It sells for $500-600 brand new unlocked. Phones don't resell well, especially after they have been used or aren't a flagship phone anymore. Now, mine is worth about $175-200. The HTC One X would be worth less than mine, like Nickelob said $150 at MOST. Even less if you expect to use it as an iPod for a while and sell it like next year. Just trying to help you and prevent you from trading it thinking you'd make a couple hundred bucks off it.
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I have 8 gigs on my iPod.
Do it, Then put your iPod up for sale.
This. You're selling an RC car for an upgraded iPod touch basically. From there you don't need your iPod anymore so you can sell it if you want and get cash. Now you have cash and an upgraded iPod.