First, think of the end-user. What do they want and what are you going to have to pay to create it? There are people who do this as a hobby and not as a business. If you want to earn money from it, you will need to keep your costs low. Everyone wants a quality card, but in my opinion, few are willing to pay for it. Remember your time has value. You also need to account for the time you spend sourcing your items. Cost up both places, see how they compare and order online if you can.