With it being as small as it is, you might have a harder time selling it. I would say a brand new, barely used one would go for $175.
Depending on condition and considering the size, maybe $125.
For comparitive purposes, I sold a Z2 shaft only used for a couple of weeks with southwest ringwork for $150. The 314 has a bigger market than a Z2, but the size of yours will decrease the number of people interested.