Hi you can reuse the d-limo multiple times. It'll take up a yellowish color. I'm not sure how often it can be reused before it gets to saturate with stuff but when not used for a year or so you'll notice stuff in the limo which doesn't look too healthy. Probably you could distillate it if you have an apparatus for that and reuse it over and over again.
It's indeed not the cheapest solvent but to me the most appealing.