Yeah, the general consensus seems to be that it's worth at least $200-$350. Personally I'd be inclined to hold it for another couple of years, but I'd probably list it at least a few times on sedo, snapnames, ebay, etc. with a reserve of $500, or higher, just to see what comes about. Might cost you $20-$30 to do, but you'll at least have an idea of what offers are around, and if you don't sell your domain, you will easily recover your costs with the natural value growth of the domain.
Hope that helps,
Pavel