I am absolutely 100% positive that I neither paid extra dollars for the War of 1812 commemorative license plate, nor was offered an option -- this was the "standard" plate in 2012, no other "standard" plate was available, this was what you got unless you wanted to pay for a "specialty" plate.
Perhaps in 2013-2016 it was different. Or perhaps if you already had a standard pre-2012 plate, you could pay to replace it with the commemorative one? But if you were getting new plates in 2012, you got this one as the default option. I am sure.
Other interesting historical facts about the War of 1812 include all the native indian nations who allied with Great Britain in the desperate futile hope that somehow they could stop their inexorable disposession and ethnic cleansing by the USA.