I'm a real human. I sometimes don't check email over an entire weekend. I also some times actually go out of town.
As far as knowing what everyone needs, I don't have an example of every Mac on hand. If someone is going to recap their Mac, they're going to need to pull the logic board. Asking them to count the caps themselves, is hardly a hardship and will be a necessity. Additionally, we have seen logic board variations. Every SE/30 has had the same assortment of caps, but the IIci and the Classic II have shown variation. If the owner doesn't count the caps, he/she may not get the right ones.