It's also worth noting that it's normalized to household size -- income divided by sqrt(household size). So for a married couple with two children -- a number

It's also worth noting that it's normalized to household size -- income divided by sqrt(household size). So for a married couple with two children -- a number close to my own heart -- the 105k satiation point would be real dollars of 210k/year. Dollars are also represented as International Dollars, which are adjusted for the local purchasing power, expressed in units equivalent to one USD in the US.