If you only have $10 you can’t buy the $12 pack with the lower per-unit price.

Being poor is expensive!

When you are stressed (because you have limited time, money and energy) you make poor decisions.

I would humbly suggest that you start engaging with more poor people and help educate them. (And I don't mean shouting advice as you walk by)

Poor people largely already know this. They don't need education about it. They need more money.