The two flintlock rifles I bought are low-end Traditions 50 caliber, made in Spain. These are about $500 each. And they are not a quality rifle.
What I should have bought is a Jim Kibler Kit rifle. Not much more money, and you have to build it. But you can end up with the finest flintlock rifle available.
I would get a 54 caliber Colonial model from Jim, replicating a rifle circa 1760.
The online store of Jim Kibler--contemporary flintlock rifle artist. Selling rifle kits, rifle making supplies, accessories and specialized learning materials.
kiblerslongrifles.com