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Bottles of the special sauce on the Big Mac sandwich were given away for the first time on Thursday, Jan. 26, 2107. Bottles are now being sold for nearly $300 a bottle with some listed for more than $10,000

(Courtesy of McDonald's)

OAK BROOK, IL -- Special sauce indeed.

Bottles of the McDonald's Big Mac sauce that were given away Thursday as part of a promotion at select locations throughout the United States have already found their way to eBay and are selling for upwards of $300 a bottle.

Only 10,000 bottles of the sauce -- which has never been available to the public prior to the giveaway -- were distributed to customers who visited the select locations and used the phrase "There's a Big Mac for that."

As of 1:30 p.m. on Jan. 26, dozens of bottles were listed for sale from sellers around the country. Completed sales show at least one bottle sold for $279 and several others sold for more than $150.

Some auctions were asking more than $1,000 a bottle, including one auction for $14,999.

Only four locations in Michigan were giving away bottles of the sauce. Those locations are:

30807 Woodward Ave. at 13 Mile Rd. in Royal Oak starting at 1 p.m.

3814 Plainfield Ave. NE in Grand Rapids starting at 6:30 a.m.

68889 M-62 in Edwardsburg starting at 1 p.m.

503 N. Lincoln Rd., Escabana starting at 11 a.m.

Quantities were limited and varied by location so some stores received more than others. McDonald's is also giving away bottles throughout the day on their social media accounts such as Twitter, Facebook and Instagram.

The giveaway is being done to promote the restaurant chain's newest versions of the famed Big Mac sandwich, a smaller version known as the Mac Jr. and a larger version called the Grand Mac.