NEW YORK ( TheStreet) -- Aside from your friends calling you unoriginal and millions of other couples sharing your engagement date, there's a price to be paid for a Valentine's Day proposal.

If you're considering popping the question Valentine's Day, the fact that you're far from the only one doing so only increases the premium you'll pay for your romanticism. According to the Conde Nast American Wedding Study, February accounts for 8% of all engagements. Rebecca Dolgin, executive editor of engagement and wedding site TheKnot ( KNOT), notes that while August vacations make that month the most popular for proposals, February comes in a close second during the Thanksgiving-through-Valentine's Day period her site considers engagement season.

"Any time you have that type of holiday, you have that built-in memory," Dolgin says. "I think one of the biggest benefits of getting engaged on Valentine's Day is that you always remember the date of your engagement."

The drawback, however, is that Cupid expects a hefty cut in return. The going rate for doing business in his cherubic clip joint Feb. 14 rose 11% this year, according to the National Retail Federation, as couples who spent the holiday ordering Chinese food and getting reacquainted with their movie collections during recent economic uncertainty are copping out in fewer numbers as the economy recovers. Yet while the average person gets away with spending $68.98 on their loved one this year, the average suitors may pay that in markups alone well before a ring appears on their partner's finger.

While Dolgin says it's up to a couple to pick the right time to propose, TheStreet finds that there are few dates on the calendar where that proposition is more costly than on Valentine's Day. With help from various industry experts, we've set up a Valentine's Day Proposal Index to show the price you'll pay for popping the question Feb. 14:

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