$400 + seems a bit high, I just ordered mine recently through a US supplier and it was under $400 for the kit, and dies, even with shipping and brokerage. If you are supporting your local gun shop, fine, I understand this. But if you want to save a dollar or two you might want to look at US suppliers like Midsouth (just the kit is listed there for $229 last time I checked).
PS I really like the RCBS kit, and the customer support is great.