Do WV or PA have the ones that go up in the air or firecrackers? According to this site,
http://www.usfireworks.biz/legal/legal.htm
They don't. That's the only advantage I can see to going out of state. Last year I drove cross country and picked up some air bursts and firecrackers in New Mexico and Missouri. Missouri had the largest fireworks warehouse outside St. Louis I've ever seen with everything in the world.