You should NEVER use the vet that the breeder tells you to use, as there is a reason they are telling you to do so, lol...
And a "wellness exam" is just a physical/visual exam and proves nothing at all about the health of the bird, this is just a "CYA" tactic of the pet shop/breeder.
You need to find your own CAV or Avian Specialist Vet that is totally independent of the pet shop/breeder, and the "Wellness Exam" absolutely must include AT LEAST a Fecal Culture to test for bacterial and/or fungal/yeast infections. At your baby bird's age they may or may not be able to do a blood-draw, it depends on his weight. Golden Conures, IF THEY ARE FULLY WEANED WHEN YOU TAKE THEM HOME, AS THEY SHOULD/MUST BE, should be large enough to also do a routine blood-work panel, which will include his complete blood count (CBC), to show infection, whether he's anemic, whether he has any internal bleeding, etc., and then also includes his liver and kidney functions, which is extremely important, as most Congenital Diseases and the most common Illnesses that effect young, just weaned baby birds usually effect the liver and or the kidneys. If they can't do a blood draw due to his size being too small then they can't, there isn't much you can do about that, but you must take in a fresh dropping from the morning before his appointment and pay for the extra Fecal Culture/Gram-Stain, because it's extremely common for newly-weaned baby birds who have been raised in a pet shop or in a breeder's home, with other birds/animals, to have both bacterial and fungal infections, and this will require treatment with prescription meds, and you shouldn't have to pay for this, nor should you have to bring home a sick baby bird in the first place...Protect yourself and protect your new baby bird!!!
And please don't EVER use the Veterinarian that the pet shop/breeder recommends or says that "they use", as that vet will likely never find anything wrong with a baby bird that comes from one of their paying-clients. They may even have a deal worked out between them. Vets are unscrupulous too, just like police officers, doctors, teachers, etc. It unfortunately happens....
***If there is not other Certified Avian Vet or Avian Specialist Vet within an hour or two of you (it's well worth the drive, trust me, otherwise you're simply throwing away $80 for absolutely nothing), then you're still going to be much better-off taking the baby bird to the closest Exotic's Vet that treats birds, and simply requesting a "Wellness Exam" that DEFINITELY INCLUDES a Fecal Culture/Gram-Stain/Microscopy and a routine blood-panel if it's possible for them to do. Most Exotic's Vets won't do a blood draw on any age bird, as they aren't comfortable with it, so that's why it's much better to find the next-closest CAV or Avian Specialist to you other than the pet shop's/breeder's Avian Vet, as an Exotic's Vet also can't just visually look at/examine a bird and tell that it's unhealthy by just the health of it's feathers, skin, feet/toenails, eyes, under it's wings (looking specifically for feather-mites and improperly growing wing feathers), looking at their cere/beak/nares, etc. So if you have to drive a few hours one-way to get to the next closest Certified Avian Vet or Avian Specialist Vet then do it, because it's the only way to even have a chance of knowing whether you're going to end-up with a parrot that will have life-long congenital issues due to bad breeding, inbreeding, etc., or for that matter a serious, acute illness, infection, or disease that is going to cost you a small fortune to treat and may kill your bird.
***You need to keep in-mind and remember that after that 72-hour health guarantee is over, you're stuck with ANY and ALL congenital conditions, acute illnesses, diseases, or infections, and anything else that may be wrong with your new baby, and the only way you can get your money back or get the pet shop/breeder to pay the potential thousands of dollars in future Avian Vet bills that it might cost you to save the life of your bird or to correct any neurological issues he may have due to bad breeding, force-weaning, unsanitary conditions, etc. is to then take the pet shop owner/breeder to small-claims court. So paying the pet shop's/breeder's Vet $80 for nothing but an office visit where they will weigh the baby bird, do a quick, visual exam of him, and then tell you he's fine will serve you absolutely no good. He needs to be seen by an Avian Vet who is totally independent of the pet shop/breeder, and he must have at the very least a Fecal Culture/Gram-Stain/Microscopy, a visual/light check for all possible external parasites, such as Feather-Mites (they turn out the lights and use a pen-light to shine under their wings to expose the mites), and if possible based on the size/weight of your baby, a routine blood-panel to check for general infection, anemia,
any unseen bleeding or loss of blood, and both his liver and kidney function (as well as any malnutrition or nutritional deficiencies that can occur due to bad-breeding/hand-feeding as well as a Force-Weaning situation... In addition, ONLY a Certified Avian Vet or an Avian Specialist Vet is going to be able to recognize whether or not your new baby bird is exhibiting/displaying any signs/symptoms of a Neurological Condition, which is very, very important to find out BEFORE you totally accept the baby as being "healthy" and make the deal final, because if the baby bird was Force-Weaned, he will most-likely have a LIFETIME OF NEUROLOGICAL/PSYCHOLOGICAL/BEHAVIORAL ISSUES, and only a CAV or Avian Specialist Vet is going to be able to identify any Neurological behaviors/issues that the baby is displaying.
***You can bet your life that the pet shop's/breeder's Vet will not tip you off to any Neurological signs/symptoms that your baby is displaying that indicate that he may have been Force-Weaned and may potentially have life-long issues as such...Just as senior forum member SunnyClover about her Nanday Conure Farley and why it's extremely important to have a new baby bird that you're buying from a pet shop/breeder checked right away before you finalize the purchase for Neurological Issues due to Force-Weaning/bad breeding practices...It ends with nothing but a lifetime (30-40 years in this case) of heartbreak and frustration...
Please do not ever hesitate to ask us any and all questions that you have pertaining to this...