Hi Yeti,
What country do you live in, I have some suppliers in Canada?
I also like the Space Pens and have used them daily for 10 years. I prefer the black, fine point; the unique thing is that when they run out of ink, the run out right now with no warning, so I keep a second one in my EDC kit.
There are many versions of Space Pen around plus I think the Fisher refills will fit in any Parker type pen. There was a post on this about 3 months ago, try the search function of this forum.
Good Luck shopping, it may be difficult ordering one in before Christmas.
Mike