No, they are sold many times. But the probability that you will meet the same patterns in your niche is very low. There are popular sets, and there are, which are sold only 1-2 times, and that and do not find the owner. Therefore, you should not be afraid of repetitions. But it allows you to put a low price on templates. Even the free templates, which have already been shared by more than 2000 people, I have never met on Instagram.