As I understand it, farmed reptiles and amphibians are kept in pieces of land that are set aside for the purpose of "cultivating" the target animals. These are essentially wild areas that are casually monitored and are maintained with essentials, such as brush or whatever, that encourages nesting. Now understand that these parcels of land are probably being used for other purposes and the "reptile farm" aspect of the land only comes into play at certain times of the year...when eggs seasonally start hatching. There are no international standards set up for what a farmed animal is or what constitutes the farm. Most of these kind of "farms" (there are some in the swamplands of the US for cultivating turtles, treefrogs and lizards)are in underdeveloped nations where labor is cheap and methodology and standards are second to making money off the animals. In some parts of Asia, it is customary to use gas to knock out the desired animals. When you get them, they live for quite a few months and then mysteriously die (well after any return policy you might have with the pet shop)...I would suspect from cumulative resperatory failure caused by the gassing. I am sure that there are some farm situations that would meet a herp lover's standards, and that the one I just described is the most extreme example. The bottom line is that "farmed" means wild caught when it comes to the diseases the animal may carry. These animals should most certainly be less expensive than captive bred.