Pure grain alcohol from a pharmacy is not the cheap stuff. What makes you claim that? It’s fully taxed at the going rate. You might be confusing this with rubbing alcohol sold at US drug stores perhaps? Hey, it’s a pharmacy FGS, they’re not about to poison you if you tell them that you want pure grain alcohol.
But go ahead and con your friends into carrying a highly flammable substance - probably illegally - on an international flight. They might send you a Thank You note from prison...
No pharmacy "dispenses" pure ethanol.
Well, they might carry Everclear, if they have a liquor department.
Rubbing alcohol IS sold, but it's isopropyl alcohol.
Interestingly, isopropyl alcohol gets you drunk way faster than plain old ethanol, but it makes you deathly sick.
Even bums don't drink it for that reason.