Short suggestion.

I can't even find where the shiai ites are located most of the time on the site, would be easier if it's just in the items section of the forums.
Or make the purchase side of the shiai in the items sections since it makes most sense to be there.

There is a section on the forum called “Shiai Token Exchange” where you can but shiai items

Just click shop or market and scroll down a little, here’s a link
http://forum.toribash.com/tori_token_exchange.php

Please refrain from posting on my posts if you aren't going to be helpful.
I'm suggesting the feature not asking for help. (of course it stemmed from needing help)