"greater affluence" is correct and usable in written English.
You can use it to describe a situation or a group of people who are experiencing greater wealth or prosperity than in the past. For example, "With greater affluence, people are able to purchase more luxuries than before."
In response to this greater affluence, they gradually increase their spending.
Foreign residents say DVDs from South Korea are helping to spread knowledge of the South's far greater affluence.
But with Japan's declining birth rate and greater affluence, the number of annual sumo applicants has been steadily falling.
Greater affluence also led to more private homes being built, so that by the mid 1960s house building peaked at more than 400,000 a year.
When greater affluence thinned these buildings' populations out a bit, however, these New York tenements eventually turned out be potentially good places to live.
As population growth and greater affluence increased the world's demand for calories, for instance, agricultural productivity grew, which in turn increased supply.
It's an expression of longing, in part, for a glorious past, one in which the federal government played a less dominant role in the nation's economy; and for a moment in which markets, by themselves, functioned well enough to keep society on a trajectory of ever-greater affluence.
"You have areas of poverty and areas of great affluence and less of a middle".
He grew up in great affluence in Larchmont, New York, surrounded by servants and protected from any unsuitable contacts.
Within America's great affluence, nearly 50 million people live in poverty, defined as income below $23,550 for a family of four.
Poverty co-exists with great affluence and inequalities correlate with race.
