A new study found that couples who spend less on their wedding tend to have longer-lasting marriages than those who splurge. The study, by two economics professors at Emory University, found a similar correlation between less-expensive engagement rings and lower divorce rates. Specifically, the study found that women whose wedding cost more than $20,000 divorced at a rate roughly 1.6 times higher than women whose wedding cost between $5,000 and $10,000. And couples who spent $1,000 or less on their big day had a lower than average rate of divorce.