I FOUND SOMETHING WRONG WITH HAMILTON!!!

In Helpless, Eliza says "One week later I'm writing a letter nightly." and in Wait For it, Aaron says "Theodosia writes me a letter every day."

Paper was highly taxed, so how much did these guys spend on paper?

I get it, they're rich, but Tony Stark can't fly to England and back on a normal passenger plane every day for a month without going bankrupt.

Or Theodosia and Eliza didn't use paper, they wrote on leaves.

Because that works.