http://news.coinupdate.com/a-matter-of-education-1376/ This is a strange blog which some of us might learn something from. A Matter of Education May 16, 2012 By Les Peters 6 Comments After making a recent craigslist purchase, I found that there were some duplicate proof sets within my collection, so I took photographs of both sides of the packages, and put them up for auction on eBay. All of them sold, resulting in a small profit for myself. Shortly after mailing out the items, I received the following email from the purchaser of a 1957 Proof Set: Hello. I received the coins today. They are for my wife for Mother’s Day. The set you sent is the "mint" set, not the "proof" set as described. I would not have paid this much for the regular mint set. If you could contact me with your email address, I could send a picture showing the difference. Please send your email or phone (text) number outside of this eBay constraint so we can communicate normally. Thank you, Tom (pseudonym)
Wow...if I had that buyer's ID, I would have all sellers blacklist him. Instead of taking the sellers advice, he threatens with a negative from the get-go.
Don't be too hard on the guy. In a world where ripping people off is considered by many as simply good salesmanship, customers can't always be blamed for jumping to the wrong conclusions. This customer at least let the seller have the opportunity to educate him. I had the same thought myself a little bit ago, but was calmed down by the discussion on CT and TIME.
I wouldn't have bothered telling him anything. I would have just said "Return them and I'll give you a refund." I have no time for willfull ignorance.