Sorry for not responding sooner, I got stuck in a meeting
Didn't mean to cause any confusion, I am more than happy to clarify.
1) Like Halverson said, I was under the impression the Red Alert buckling spring set was coming soon. So there is already some demand on GH. Is this not the impression you got?
After browsing GH and DA for several hours over the past few weeks the RA set was the only BS keyset that looked like it had really gone anywhere whereas several GBs have been done for Cherry caps and various other parts such as KB Cases and switch mounting plates.
2) If there is a lack of supply of keycaps, how would they fulfill the RA set and a GB?
It is still possible to have new keys made but the keycaps and keys available are primarily new-old stock from the mid to late 90s or parts that have been salvaged from (hopefully) non-functional units.
3) Next, if there is a demand for custom Alps keycaps sets, where can I get one of these 'cause I'd really love a set but they're no where to be found? I'm not sure there's that high of a demand for Alps caps and that makes me sad.
I very well could be wrong on the availability of custom Alps keycap sets but they seem to be fairly available in the asian market segment.
4) Finally, what do you mean by "keys" and "caps". To me, they're the same thing.
I differentiate BS "keys" from BS key "caps" because they are actually two very different things.
There are two primary types of buckling spring keys that I have experienced over the years; One has removable key covers or "caps" which are not attached to the key stem that actuates the spring and a second type where the key cover and stem are a single unit or "key".
BS Actuator Patent with detailed diagrams
http://www.clickeykeyboards.com/model-m-gallery/buckling-spring-torsional-snap-actuator-harris-ibm-1978/A picture of the two different kinds
The top is a stem and "cap" the bottom is a "key"
http://www.clickykeyboard.com/techpics/key_caps_compared.gif