I have heard people say they were entitled to a full refund because a box was delayed(by the carrier) and did not arrive overnight. Even though the animal arrived alive, and nothing seemed wrong with it, they still decided that they wanted a full refund(or partial refund in another case), just because the box was delayed.
I myself would guess that "not responsible for carrier delays or mishaps" only means that the package might be delayed, or scuffed, or lost temporaily, but NOT that I would then not be responsible should the animal not arrive, or arrive dead. If the box gets delayed, and the animals dies in transit, it did not arrive alive, therefor, I(as seller) would then be responsible for a full refund(including shipping) or a replacement(shipped at my expense since they've already paid for XX animal to be shipped to them).
I think live arrival is a decent TOS, if you trust the seller to be a honest person. If it's someone I do not know, I will look for a longer guarentee than just "live arrival", because I know *I* won't kill the animal through idiotcy then try to claim it's the seller's fault. I don't know that the seller(who is a stranger to me) will not ship me a sick or dying animal, then claim "live arrival" was all they were responsible for.
Sellers I trust, I will not be bothered by just a "live arrival" TOS, since I know they will make right any issues that are their fault.
Amphibians, I would NEVER buy any animal, of any kind, that did not AT LEAST guarentee Live Arrival. I would wait and get the animal at a show, or not get it, rather than buy something that isn't even guaranteed to be alive when it reaches me.
ALSO... I always use the phrase "If you don't like their TOS, don't buy from them". You do not have the right to dictate anyone's TOS to them. You do have the right to not buy from them. Buying from someone, and THEN turning around and complaining that they do not go "over and above" their TOS to fix an issue you have, is being a whiney PITA. If they only guarentee live arrival, and the animal dies three weeks later, don't whine that they should then replace the animal. Also, don't send emails praising how perfect the animal is, then try to claim a week later that it arrived listless and near death.
Most good sellers WILL go above and beyond their TOS when something goes wrong that is not the buyer's fault. Look for good sellers, instead of the lowest price, and most times you'll have a good deal.