[kansas]

I've never reused a reservoir or any of the other supplies, so I can't answer any of those questions... But, as for the Quick-serter, I gave up on that a long time ago.. Mine never worked right and was a huge pain in my rear-end. I now insert it manually, and it works the first time, everytime. Plus, if you hit a nerve or a sensitive spot, it's much easier to move. And, psychologically, it hurts alot less.