Bird breeder with non-banded baby birds?

There is a local breeder that I bought my young green cheek conure from, and she wasn't banded. I didn't take notice to see if any of his other birds were, but I find this a little troublesome now because I want another bird from them... The babies aren't imported or anything because they have a store where they sell their birds, and there is a nursery there and you can look at all of the babies they have there. Though I didn't see the parents, but I didn't ask to see them either. They have all of the adoptable birds in the store area, the nursery in the store and then I guess the parents are at their house or in the back of the store. I just want a banded bird so in case something happens and the bird gets lose outside or something. The people who own the store are so nice, and it's a husband and wife. They took a baby green cheek out of the nursery for me to see. I 100% trust them because they gave me a discount when I bought a cage and all of my bird supplies, and he gave me a list of all bird hazards (of course I knew what not to do or use near them, but still). He clipped her wings and trimmed her nails, and helped me harness train her. I just want to know if there would be any reason why the babies aren't banded.