To answer the question, "No". If I know that I'm going to be shooting multiple calibers, 200-300 rounds per month, I am darn sure gonna' be casting my own balls and minie's! The cost of the gear will pay for itself in short order.
Where do you get your powder and caps? Average 250 RB per month at average 40 Gr. of powder works out to 1 1/2 pounds per month. Shooting supplies here in the west are thin but available. As for caps, there are none.