That doesn't look good and the skin looks very loose as well, can we see another picture of the gecko to see overall appearance. I would look into seeing a vet though.
that first gecko probably needs to be taken to the vet, or returned to the breeder with a refund for you, because that is not right. the second geckos tail is fine. it just means that it lost its tail at some point. that unnatural looking part is just where it has regenerated