my understanding of the vague plan was that base fee got you in the door and basic tools, but that anything dangerous or special would require a nominal training course, the funds of which would go to maintain the consumables on that item.
i.e. 50$? 100$? for a 4? hour basics class on a lathe covers repair and replacement of the cutting tools associated with it and power and the like, and you can then use that tool whenever you want.
the basic "power tools" class fee would go to things like drill bits, saw blades, and the like.
your 200$? a year membership would cover utility costs, new soldering iron heads, new hand saws, sewign machine needles, and the like that we as a group decide that anyone can use without significant risk to themselves, others, or a more than nominally priced tool, but you'd have access to the space, and things like clamps, and hand tools.