Having been a percussion guy for years and just took rabbit hole into darkest flintlock land, here's my take.
Traditions makes a solid basic rifle but it's built to a price point. Functional, yes, match grade, never. Past that I bought a very old Cabela's Hawken kit made by Investarms and paid less that what a Traditions would cost. From the Lymans I've handled, there's little to no difference. The weight, feel, lock, twist are identical to a Lyman GPR flintlock of the same vintage.
So is my antique kit up to a Kibler? Not hardly but I only paid right at $350 for what is in the main, a Lyman GPR. Just shot it today. The first outing I shot two groups, not doing any load development. The purpose was more a function check than anything and to see what I'd like to change. The groups were right at 3.5in at 50yd, not bad for the standard bead front and buckhorn rear and I'm sure that can be tightened up.
Moral of the story, you can find a deal on a decent flintlock. It just takes time. Get antsy and be prepared to shell out.