I am a great fan of the space pens. I always have a bullet pen in my fob pocket or wallet. Yes, the medium points dribble, so I always use fine(my writing is so disgusting that medium point would be totally illegible.)
It was not NASA that spent millions on the space pen research, it was Paul Fisher(passed away a couple of years ago,aged 92), the founder who developed the pens. NASA merely bought a couple of thousand dollars worth off the shelf.Obviously, it was a massive PR coup for Fisher.
A little known fact is that when Apollo 11 was on the moon, there was a latch that closed itself and the nib of a space pen saved the day.
The Russians used pencils that were more like crayons-do not want the broken tip of a pencil "floating"

around.
I have found a reliable dealer on Ebay to get my space pens

-make great presents. The price I get them for is less than a bottle of Whiskey, but way more useful.Way too expensive in OZ.