I'm not an engineer or electrician or anything like that, so someone please correct me if I'm wrong on any of this. My understanding is that power supplies can be either "regulated" or "unregulated", with the distinction being that "regulated" power supplies (somehow) ensure that the output voltage is precisely the number on the label (e.g., 12V), whereas an "unregulated" power supply sorta assumes that the voltage at the wall is 120V and ramps the voltage down by a factor of 10, resulting in output that is precisely 12V only if the power at the wall is precisely 120V (i.e., if the power at the wall is 110V, then an unregulated power supply would output only 11V, but a regulated power supply would still output 12V). And, since there is variability in the voltage that is coming out of the wall of different people's homes (sometimes it can even be different voltages on two different outlets within the same house), using an unregulated power supply makes it difficult to predict the actual output voltage that an end-user will see come out of a power supply. One of the factors that affects the temp of a "log vape" is the actual output voltage of the power supply used. I think that most (all?) log vapes ship with 12V "unregulated" power supplies (someone please do correct me on this if I'm wrong---do any of the log vapes normally ship with a regulated power supply?). So, it's tough/impossible to accurately predict what temp an end-user will see in their log vape, since the actual output voltage of the power supply is tough/impossible to accurately predict. I know that the range of variability isn't huge, but I think that it can be functionally significant in this context. So, this makes me wonder: why don't log vapes all come with regulated power supplies? Are they much more expensive? Or is there some other problem with regulated power supplies? And/or is there something beneficial about unregulated power supplies? It seems like the consistency (theoretically) of the output of a regulated power supply would be advantageous, imho, but what do I know? Anyone have any info about this?