Houston store promises free furniture with $85 oil

One Houston furniture retailer is promising refunds to customers if U.S. crude ends the year above $85 a barrel. It's a promotion that the owner of Gallery Furniture said could cost him between $10 million and 20 million if he loses the bet.

However, it is certainly good for business. So far 100 people have taken up the offer, Jim "Mattress Mack" McIngvale told CNBC's "Closing Bell."

"We had a tremendous last three days of business because of this promotion," he said. "The whole idea is to make customers happy."

Customers must buy at least $7,000 of furniture, and the promotion ends when 500 qualifying purchases have been made or on Feb. 1, whichever is earlier.

Crude prices have tumbled recently, with U.S. crude settling Monday at $46.07, its lowest level in almost six years.

However, don't think McIngvale has any particular insight into the crude market.

"It's just kind of a number that popped in my head. I was asleep and I was thinking about this promotion. I woke up, and the number was $85."

—CNBC's Torrey Kleinman contributed to this report.