If you're talking about the 225th Anniversary Enhanced Uncirculated Sets, there is a mintage limit of 225,000 with no limit on the quantity you can purchase. They are still for sale on the mints web site, $29.95 ea. + $4.95 shipping, per order... https://catalog.usmint.gov/225th-anniversary-enhanced-uncirculated-coin-set-17XC.html?cgid=other-coins#start=1

I have three sets myself and the coins are beautiful, but beware, some dealers are being deceptive by saying they're sold out... http://www.numismaticnews.net/buzz/bottom-hit-enhanced-set-sales?utm_source=newsletter&utm_campaign=nmn-cfb-nl-170908&utm_content=968101_EDT_NUM-FRI170908&utm_medium=email