yeah so that tends to happen bc the company that ran the GB or sole proprietor cannot afford to add any overhead beyond the extras that are ordered in the case they need to replace units. So usually there are very few in stock "extras" or none at all. There are quite a few companies like Novelkeys, cannonkeys, and omnitype that usually order enough to have in stock extras once they deliver.. sometimes that could take up to 2-3 years on the longer end of things. I will say I know for a fact that Novelkeys is a vendor that puts up their money first to get the order submit and any extra they take in from Group buy they double down with so there are that many extras available after the fact.. so in that case it feels like more of a preorder than a group buy.. and there is a difference.

Hopefully im nuancing this enough, and its not hella confusing. Happy to help answer more questions. There is def validity to ur concerns, and others feel the same. You just have to go with trusted vendors and sources.