The price of the molar has gone up. Researchers say the tooth fairy has graduated from leaving a shiny quarter under expectant children's' pillows, in fact, she could leave up to $50.

Visa conducts an annual tooth survey to uncover fairy inflation They found she is willing to pay a higher price for baby teeth every year, NBC reported.In 2013 the average tooth went for $3.70, that's an impressive 23 percent increase since the three dollar norm in 2012. In 2011, kids were only making $2.60 cents per tooth, which means prices have gone up by 42 percent. 

In the survey, the company interviewed over 3,000 people over the phone. 

At the 2013 rate, kids are making an average of $74 for a full set of teeth.

The inflation is partially a product of competitive parents. 

"A kid who got a quarter would wonder why their tooth was worth less than the kid who got $5," Kit Yarrow, a consumer psychologist and professor at Golden Gate University, told CTV News.

 Brian and Brittany Klems gave their six-year-old, Ella, $5 for her first lost tooth and $1 for the rest. Then one day Ella found out her friend made $20 a pop, CTV News reported.

"I told her that the Tooth Fairy has only so much money for every night, and that's how she decides to split up the money," Brian Klems, an author and parenting blogger, told CTV.

Visa has a "tooth fairy calculator' to let parents know what kids in similar age ranges and demographics are making.

According to the study, Northeastern children get the most money for their molars at an average rate of $4.10. Midwesterners recieve the least money, at $3.30. In the West and South tooth prices range from $3.60 to $3.70 on average.

How much money do your kids get from the tooth fairy?