I would guesstimate that 300 for the first caliber and 100 for each caliber you add. That number includes powder, bullets and primers for each and its a very round #. Best to make a shopping list and post it and many here will be able to tell you who has the best deal at the moment. Others will add to your list those things you've forgotten that they find important. You can then look at all of the input and decide what you need and you'll know where to get it at a good price.