Comment by lionkor
I bought a pack of 100 of them for super cheap a few years ago, and a pack of 200 or so pencils with erasers from amazon basics. They carried me through all my exams in university, I have some in every backpack, purse, everywhere. Never had to worry about not having a pen ready, or a replacement if I lost one the morning before the exam. That is truly a buy-it-for-life level investment.
I’m not sure I can get behind buying 100 of a disposable pen as “buy it for life”.