Of course, you need to to decide carefully on the sum anyone will have the capacity to use a gift.
Keep track of all this information in your spreadsheet. Chances are, the online store will not tell you how much more funds are still in your card. What do you get for the person who has everything? https://groups.google.com/g/giftcard-mall-my-gift-info/c/lJb4jNQqwjY