[dragonwriter]

> Expecting people who are just living on a UBI to move somewhere with a low cost of living also seems reasonable to me

Not unless you are providing means-tested relocation assistance (which is against the spirit of UBI), and ignoring that UBI and the associated taxes to fund it will:

(1) reduce CoL in high CoL areas and,

(2) raise CoL in low CoL areas.

And assisted relocation actually magnifies this effect.

[gpm]

No. The cost of relocation is the cost of a bus ticket, suitcase, and a few phone calls, something that $12,000 already easily supports.

The rest of the money people spend is to bring their existing wealth with them, something that society doesn't need to assist with.