At least, I am under the assumption they are still unobtainable. Wanting to know what they are worth, or if they don't have much worth. (Andrew dropped... four to seven, or so, in a snipe during.. the winter holidays? Somewhere around that time, I think.)
Although its cool to have a unobtainable such as the cocoa you had gotten, I can't really imaging something like that being to valuable. Honestly, unless you plan on having some unobtainable museum or something. Most people don't care for them. I'd say less then 2k
Some of the common ones like redstone wire/farmland go X<10,000 but if it's rare it can go for around 40k if not in unobtainable shop. I believe I saw one go for 5k, but like pancake said. These are EXTREMELY TOUGH SELLS! Only collectors/museums will buy it. When you advertise it in [Trade] It's really annoying when people pm you to see it and waste your time just not to buy it If you plan on selling it I recommend VIA forums.