Take a look at this eBay listing. Overpriced much? http://www.ebay.com/itm/1969-US-Mint-Proof-Set-S-mint-original-package-/200695975950?pt=Coins_US_Individual&hash=item2eba69900e
theres like 5 other sets from him too at only less than $10? maybe they dont know theres a better deal?
I'm thinking shill bidding, if you look at the bid history, the first three bids are from the same person! The last bid, the winning bid, is the only bid from a different person.
If you you look at the hidden bids another bidder had a max of $30 and the winner won by $1. This tells me the high bidder was willing to pay even more. Haha too funny!
Maybe it's all the coins are PF70 registry grade...lol. My opinion is it's an investment buyer. Many people out there think oh goodie a silver Kennedy half only problem it's a 40%er and even if it was 90 most people see $28 spot price and assume that's what they will get for any and all silver. If it's coupled with someone who thinks the dime and quarter have silver content too look out they could have paid $40. Anyway you cut it the buyer will be sorely disappointed.