Deodorant, razors, soap. Both men and women use all three of these products, and yet they're shelved according to which sex they're directly being marketed to. While this sparks the conflict of reinforcing binary gender roles, it also provides a costly imposition for women, who are routinely paying up to $1,300 a year more for exactly the same products that men are buying.

So why is this the case? According to Emily Spensieri, president of Female Engineered Marketing, it predominantly boils down to marketers knowing they can get away with it.

"They know women will pay more," she told HuffPost Live in a Friday interview. "So they are going after them a little more aggressive that way. Whatever the market will bear, that's the choice they make."

A smaller quantity of women's products are sold relative to men's products, she added, perhaps contributing to their steeper price.

"Women are much more likely to purchase a product that looks like it's for a man than a man will purchase a product that looks like it's made for a woman," she explained. To soften the impact of women purchasing cheaper, male-oriented alternatives, a higher price is charged for the "women's" versions.

With females making 77 cents to a male's dollar, one thing is for sure: the pink tax isn't something we can afford to ignore.

Watch the clip above to hear more from HuffPost Live's conversation about the pink tax.

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