Well, as you can see via the below screengrab, there is no edit button next to the regular items, but not next to any of the '3D Objects', yet I can see some on the market. Not sure why, but a little enlightenment would be appreciated.

http://gyazo.com/544dc7d4ec4f2c8ecc3e2c84382a030a

Click the icon for the 3D items, that will bring you to the page that allows you to sell them.

Nope, didn't work. Same thing for all of them, I just used the kame as an example.

http://gyazo.com/239740681336ff64ce290a848457d8a0

Hi, single items in set cannot be traded, you must take them out of set before putting them in market. Make sure your item isn't in any set, then click on its icon. Price edit should appear normally.

hmm, tried this before and it didn't work (outside a set), which is why I gave up and put them in there in the first place. It seems to work now, so I guess it was probably just something messing up on my end.

Thanks anyway.