Anyone have a working version of showcase?

Before you ask, no I don't want to use ShowcaseStandalone. I've tried it, and it's much more complicated and you have to set a bunch of stuff up just for one item. With the regular showcase plugin, you just shift+right click and you type in the item name and the price. Then you can just click to buy and right click to sell, or even shift+right click to sell a stack.

So, does anyone have a working version of this plugin that they would be able to send to me?