How do I get the Merchant mod?

By the way, people should know this is just a proof of concept, not really a dungeon per se.

I have to give you the Thumbs up on this, and to Zappa too, the Merchants Mod really works.
Tried it out. Nice thing is... if you have the mod, you can use the merchants... if you don't have the Mod, its just empty chests. So the actual Merchants mod isn't require to actually play it... its only to use the Merchants. Nice job.