Andrew Bloomenthal has 20+ years of editorial experience as a financial journalist and as a financial services marketing writer. Erika Rasure is globally-recognized as a leading consumer economics ...

Marginal utility helps set product pricing; high initial satisfaction decreases with more units. Some stores use bulk pricing when consumers value additional items less. Progressive taxes assume each ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...