if you can not find a place that will give ya credit or cash, you might consider listing what you have available, along with what you hope to get for them here, and either sell them off individually, or get a list of who wants what and take it to the frag swap to sell. i know a few folks bring some money along just in case theres extra stuff people can not find trades for. i know for myself at least, if you showed up with some nice stuff and wanted reasonable prices for them, i would definately budget to get some stuff from you.
I would post here first. You can do a bit better directly with other reefers but it is more of a hastle. After that, I like dealing with Woody. He doesn't give a lot of credit but then again, I think his corals are the cheapest around.