How much should I pay for Tuff wheel, button and adapter?

So, I found a MOPAR tuff wheel with horn button and adapter complete set for sale for about $350.00 shipped. He says it's bolt and go! The guy selling it sounds very MOPAR knowledgeable.

I'm just trying to get a feel for if this is a good price or not. My gut says I can get a better price. I don't know if I should jump on it, or not? It's not like these things grow on trees.

It's an intra-state deal so that makes me cautious.