Yeah, these are good points -- I never use them, either. The current cost structure sounded reasonable on paper, but in practice not so much. For the next version, I've changed it to 12000 metal and 1200 crystal, only a 50% premium over the Mark I science labs since they also gather at a slower rate. I don't think there will be much incentive for people to spam these, which is what I had originally been worried about.