Third-class passage was £8, approximately $1000 in today's currency, i.e. more expensive than an equivalent trans-atlantic flight today, and too expensive for poor people to typically consider.
> Middle class and rich people rarely immigrate. It's the poor that do.
"The median income of foreign-born households in 2016 was $53,200, compared to U.S. born resident’s median household income of $58,000."
That seems like middle class people to me.
Do we have different definitions of poor?