The milk I just opened is labeled "Grade A." Can you buy B-grade milk? Where? Is it cheaper? Has it been pushed out of the market by uffish dairy conglomerates?
See: [City of Elko, NV Municipal Codes: Milk](http://www.ci.elko.nv.us/codes/City_Municipal_Code/Title_9/4/1.html "The Internet is awesome: milk codes!")