WWII wasn't always cheap. For a GOOD tunic, you'd spend around $250 in the early-mid '90s. That's what my dad ended up doing.
Don't know what happened, but I'm sure the Chinese pumping out repros really spurred the Euro and then the American vendors into competition.
On the flip side, ACW shit has gotten worse. So many shite repros out there and they're so fucking expensive. If anything, there's more farbs out there now except you've got the campaigner regiments out there which look great.