Shop Pa. Fireworks for the best dealers on all fireworks. For instance, the world famous, best selling artillery shells for over a decade. Excalibur Canister Shells, 24 different effects, 60 grams of powder in each shell. Under $50 per box. Pa. fireworks shoppers may also qualify for FREE FIREWORKS SHIPPING on quantity orders. Above all, warehouse direct fireworks shopping in Pa. No leftovers, overstocked or outdated inventories. Fireworks Stores In Pennsylvania, where the serious pyro shop for fireworks to buy online. Best place to buy fireworks online is without any doubt, Pennsylvania Firework Stores.