Call me crazy but in some instances, I'd actually prefer to buy WC. For some species, ideal husbandry techniques have not been established, especially when it comes to nutrition/supplementation. For example, with many montane species, if I can get good pics of freshly imported animals, get good answers from the seller to pertinent questions, and be reasonably confident that the chameleons have been well hydrated, I will often prefer an adult or subadult WC (partly because I may reach the goal of breeding the species sooner) over a very young CB animal, especially if I believe the seller and/or breeder, though well-intentioned, may have given too many supplements (especially D3 and preformed vitamin A). I personally steer clear of CB animals with edema, especially if it is particularly noticeable, simply because edema is frequently a sympton of temporary organ malfunction, or worse, permanent organ damage, often caused by vitamin overdose. Organ damage will often result in stunted growth and/or death. Buying a young CB of a species (those not established in captivity) that might not reach maturity at twice the price of a WC, might not be worth the risk when you can buy a pair of reasonably healthy WC chameleons for the same price, that is, of course, if you have experience in acclimating WC animals and if you are willing to spend all the additional funds (including vet bills, etc.) that wild caughts may require. On the other hand, if you can find captive borns of the less kept species that are partially raised (not too young), then that may be the way to go, especially if some of your primary goals are to raise young to maturity and breed them. Unfortunately, many species will not become established in captivity unless we have a good captive poplulation with an adequate gene pool, so we need more WC. Well-regulated quotas are a must though. No keeper wants to see wild populations depleted beyond a sustainable level.
Bottom line, if I were looking for a "pet", then I would definitely look to buy CB of a species well established in captivity. Since my interest is in breeding species not commonly kept and wanting to get them established in captivity, I will continue to buy WC for new blood. However, I can certainly learn a lot about raising neonates to adulthood whether I go with WC or CB. That is one of the biggest challenges, IMO, with many of the less commonly kept species.
Perry