Here, here.
An interesting thought that I mostly agree with; I think special ordering may not be necessary but it depends on time and searching.
Personally I hedge my luck a little when it gomes to getting "the perfect" gun which requires information and questioning but still remains something of a dice roll, or whatever other metaphor for chance one likes. Close to perfect guns are out there but finding them means the folks selling them need to either provide or be pestered for detailed information (stock dimensions etc.) and the folks buying them need to know the information relevant to them (particularly stock fit which is surprisingly absent in most cases). I try to obtain that information before making the plunge but still end up "punting" a lot. In some cases I've picked up a gun because it is an excellent example of it's type for what I collect and I've accidently ended up in the bargain with guns that work for me perfectly. Some have been high end sidelocks; others bottom of the barrel boxlocks. I even reunited a pair almost accidentally and found they could work for me "as is". Anyway I recognize I've been fortunate in obtaining some very nice doubles that way.
And I agree we certainly need to appreciate what we have. In my case I should also arrange to pass on those which really aren't best for me and have shifted in my collection priorities but might be good for someone else.
Jeremy