I doubt it is luck, there is some formula for the amounts. Supports my thought that the amount suggested for UBI is surprisingly low.

I already get this amount per month from the Universal Credit system, approx 50 a week as a basic level (no children etc) from being made unemployed. When I was last unemployed 20 years ago it was around 35 a week. Now I am also homeless I can get around 380 a month for housing benefit on top once I find a place. I don't particularly understand how this is a universal income except it just goes to everyone instead of those needing it, but I also don't understand people from other countries thinking we can only fund this by scrapping other subsidies. During the first lockdown I was twice given money by the government to cover lost self employed earnings based on referring to last year's tax data, averaging a 3 month period and paying out 80% - considering I didn't expect anything that was a pretty sweet deal.