One Confederate flag-maker's sales have surged amid heightened controversy in the wake of violent rallies in Charlottesville, Virginia.

Alabama Flag and Banner in Huntsville, which may be the only remaining U.S. manufacturer of the Confederate flag, attributed the rise in sales to the ongoing debates regarding the removal of the Confederate monuments across the country, CBS News reported.

"What's really pushing sales is removal of the monuments," store owner Belinda Kennedy, told the network. "The general feeling I get from customers that call and email is that they are just pushing back at people who are trying to revise our history."

She added that, as long as the topic remained in the news, demand would continue.

Sales had increased so dramatically this past week that customers of Alabama Flag and Banner had a two- to three-week wait time for Confederate flags, read a notice on the store's website.

"We are shipping them as fast as we can make them and in the order in which they are received. We greatly appreciate your devoted support and business!" the notice said.

Major U.S. flag-makers stopped producing Confederate flags in 2015, Kennedy said.

"After the church shooting (in 2015), Amazon and Walmart stopped selling (the flag) and people were afraid they wouldn't be able to buy it," she told AL.com.

"And then you started seeing streets renamed, schools being renamed, mountains being renamed. And then people started getting angry and then there's another surge (in sales)."

Since then, Alabama Flag and Banner has sold between 600 and 800 Confederate flags a year, up from a handful of orders per year.

"Everybody's got a different reason (for buying)," Kennedy said, according to AL.com. "By and large, I think people are afraid they may not be able to get it one day."