A lot of the decisions that you would need to make when you are trying to run a business that is attempting to earn a reasonable amount of profit each and every quarter, and suffice it to say that many if not most of these decisions would require quick thinking on your part. After all, the vast majority of these choices would involve you having to move things along as best you can, and deciding on an appropriate initial batch of business cards is one of the most essential things that you would need to focus on regardless of how mundane it might seem to you at that precise moment in time.
At the end of the day, you can never be sure that Metal Cards design will look the same on the physical printed copies as it would in your digital design program. That means that you should keep your first batch relatively low. Try printing a batch of fifty to start off with since this will help you see how good these cards look and it would prevent you having to deal with a massive batch that is not optimal in terms of function or appearance.
Once you have tested your design out with a small batch, suffice it to say that the time will have come for you to print a large one. We would strongly recommend that you get a batch of 10,000 cards printed for your finalized design due to the reason that this would help you save on the printing costs thanks to the bulk discount that you would receive. Tricks like this can help you squeeze more profit from your sales.