Bought a MSD 8534 off a member here ( see Photo of what I got)

I have bought and sold a lot of things here in the almost 10 years I've been a member, and for the most part It has been a Positive experience. But then along comes this deal bought a used MSD 8534 SB used distributor and it arrived on time packaged well and from the outside looked just like it did in the ad. Took the cap off and it was a solid ball of rust! I contacted the seller and this is a quote of what I sent him today at 9:09 pm EST
I got home today. The packaging was great , the outside looked great. Have you looked inside of it lately? It is a solid ball of rust! I'm not wanting to buy a new reluctor and a magnetic pickup to the tune of $88.64 plus shipping and go through the labor to install them. I wanted and thought I bought a "ready to run" distributor. I just a soon return it for a refund.--------------Roy
At 10:12 pm EST, this was his reply.

Bullshit! My engine or car has not seen water in 15 years. I don't know who's distributor that is but I know its not the one I sent you. It is impossible that there is any rust on that dizzy. That does not even look like rust!
At 10:19 EST, this was my reply
You really think I'm lying to you? And that this is not your distributor? I have no reason to. I've been a member here in great standing for over 10 years. This is why I pay the extra fees to Pay Pal, I'll let them handle it.
And this is the best reason to pay the Pay Pal 3%. Dispute is already started.