One might also maybe suggest, that if you have some untradeable pills, which are not that much worth, you might as well use them (got around 1k sugar canes, never seem to be able to use enough to have none because of opening boxes).
But buying pills for PEDs....
Even for skilling it might be more economical to simply get the implants to skill up on lower levels (aka below level 100
)
As for the boosts...rather get a ring for higher reload and avoiding getting hit (although the latter one will not give you the really precious evade skills).
So buying pills...its for folks that are competing with others at their level in competitions. Can help but no guarantee that it does.
Even higher skill gains....at my level it takes me roughly 100 hours to gain 1 level in Laser hit (without any rings or pills).
Adding a 15% reload ring gives me a slight boost there, but also my guns are deterioting those 15% faster.
So in short....if you are at a low level below rather 70 and want to use pills for skilling, do the maths if chipping in might not be worthwhile.
Those 10 or 100% skill gains from pills are way more worth when you are on a higher level.
And allways remember...just because you could kill something it does not mean you should