Bestbuy has the physical copies of Diablo 3 and Reaper of Souls on sale for $8.00 each with GCU they come to $6.40 each.
Looks like Reaper of Souls is in store pick up only
http://www.bestbuy.com/site/searchpage.jsp?st=diablo+3+pc&_dyncharset=UTF-8&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960&keys=keys
Looks like Reaper of Souls is in store pick up only
http://www.bestbuy.com/site/searchpage.jsp?st=diablo+3+pc&_dyncharset=UTF-8&id=pcat17071&type=page&sc=Global&cp=1&nrp=&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960&keys=keys