I don’t think you did anything wrong, I’ve had many interactions with breeders on MorphMarket and even a few outside of the internet through mom and pop interactions/small pet shops, etc. In my 40 years (25+ in keeping/rehabbing/rehoming) I’ve only had two memorable incidents involving animals I’ve taken on and questionable medical status. (Aside from ones that were disclosed to me prior to taking on and me willingly still accepting it).
Without going into a “War and Peace” sized diatribe regarding the two incidents one was a leopard gecko acquired from a mom and pop pet store (which was a bit on the lean side) and after trying to fatten her up and some fairly pricey vet visits we were told she had crypto and she passed before we even had the results.
Other incident was a hognose that showed up exhibiting neurological issues, also after extensive vet visits turning up basically nothing (although a blood test was not able to be completed due to her size…and she has since passed…. Sadly. Although I don’t think it was anything on the breeders end (I believe it might have been an issue in the shipping) either overheating or perhaps exposure to some sort of chemical in transit.
I’m not trying to climb up on a soapbox and preach my way of thinking but I have a tendency to at least keep in contact with the breeder for the first few weeks or months to intermittently let them know how my new family member is settling in as well as prior to receiving I ask questions about the animals husbandry at the breeder so I can make sure to follow it as closely as possible to make a stressful situation on a new pet as least stressful as possible.
Also especially in an animal that can in a literal and figurative sense go “belly up” after transport. Reptiles, birds, and aquatic animals being some of the few in my limited experience that can potentially die from unknown causes (without extensive testing, and even then sometimes it’s just congenital)
In my opinion they waited entirely too long to at least voice some concerns that something may be wrong. I understand it’s the holidays and people are crazy busy but I know if an animal I had recently picked up wasn’t eating or regurgitated a meal I’d definitely hit them up to ask if perhaps I’m doing something wrong or they have a preference in food type. (A random example being I had a snake at one point who refused to eat white frozen thawed rats. He liked darker colored ones).
Pretty much it’s up to your best judgement as far as what you feel you should do. It is a difficult predicament to be in and one I’m hoping I don’t have to contend with if I ever start hobby breeding.
(Have some experience in breeding fish and aquatic invertebrates and much like some reptiles even they can have simple “failure to thrive” issues.
Personally if it was me as the buyer I’d eat the 500 dollar cost (at least that’s what my vet charges) to do the necropsy if a seemingly “fine” animal (aside from the regurgitation) randomly passed away.
Also as another aside you’re one of the many people here I have done business with and you’ve been very courteous and caring and my “little peanut” as I call her is doing great. Also don’t think anyone would actively sell a sick animal to someone else without full disclosure in this day and age where you can basically put someone on blast all over social media.
You shouldn’t beat yourself up too much over the situation even though I can’t even grasp how much it must hurt to lose an animal that you had under your care.
Sorry for the huge rant.
-Jen.