Why is Gaja's wine so expensive??

[quijote]

IK and others, I'm interested in buying agers--and probably will do so--but don't yet have a wine fridge (and that's my only option, 'cause I can't have a cellar in a condo). For me, that's the one barrier to starting up a long-term collection.

In your days of mobility, did you always take care to store wine at proper temps? Did you start off knowing how to store them? Wisconsin is cold much of the time, but the summers can be quite warm and humid.