Why not buy one decent pen “shell” and then just buy the plastic tube with the tip and the ink afterwards?
I know many companies use pens for marketing but still, they could apply this too and also stand up for the environment while still do marketing.
on the other end of the spectrum, i go through about one pen per decade. the one at my desk ive been using for about 6 years. somewhat remarkable to me that the ink stays good for so long.