http://mintnewsblog.com/2013/05/lower-p ... roof-sets/
"the United States Mint will lower the prices for several numismatic annual sets containing silver coins. The products include the 2013 Silver Proof Set, 2012 & 2013 America the Beautiful Quarters Silver Proof Sets, and the 2013 Congratulations Set.
The 2013 Silver Proof Set contains a total of 14 coins, with five quarters, a half dollar, and dime struck in a composition of 90% silver. Each set contains net silver content of 1.33823 troy ounces, with an additional face value of $5.06 worth of base metal composition coins. Sales for the set began on May 2, actually the same day that the US Mint lowered prices for a slate of other silver numismatic products.
The original price for the set was $67.95. The notice indicates that the price will be lowered by $7.00 to $60.95 per set. As of the latest sales report, customers have ordered 214,477 sets at the higher pricing.
The 2012 & 2013 America the Beautiful Quarters Silver Proof Sets went on sale January 10, 2012 and January 8, 2013, respectively. These sets each contain five quarters struck in a composition of 90% silver, yielding silver content of 0.9042 troy ounces.
Each set was originally priced at $41.95. Prices will be lowered by $5.00 to $36.95"
The ATB sale suprises me a bit, I thought they were popular? Or maybe there were too many varieties with the 50 state quarters already.