No single journey to New England cost a trillion dollars but neither does a single manned trip to Mars. Over time hundreds of ships brought thousands of people to dozens of colonies. Ships kept bringing people even after the colonies were self-sustaining. How much did european colonization of the east coast cost?

History is full of people selling everything and taking a one way trip into a new frontier.

> How much did european colonization of the east coast cost?

Not a lot. People actually paid to move there because it resulted in a significant improvement in living conditions/income/etc. on average (besides the few earliest attempts). Colonization and exploration was almost entirely driven by profit union at least the 1800s or so.

Colonizing Mars wouldn’t be even remotely comparable in almost any way to what happened in the Americas/Australia/etc.

> selling everything and taking a one way trip into a new frontier.

Yeah, because there was a lot of free land there/natural resources/high demand for labor etc.

> People didn’t know what could be found in America. There was a sense of adventure

To be fair they kind of did. Or rather they never expected to finding anything extremely different to what they have experienced in Europe (besides very low population density and all the benefits resulting from that).