Here’s what Costco looked like when it first opened in 1983

• Costco has existed in some form since 1976.
• That’s because the modern-day company is the product of a 1993 merger between Costco and Price Club.
• The first warehouse bearing the name Costco, however, opened in Seattle in 1983.
• Costco provided Business Insider with historical photos of the chain’s inaugural warehouse.
• Visit Business Insider’s homepage for more stories.

Costco is a staple of the big-box-store landscape. It’s been around for a while and has attracted a devoted flock of members thanks to its low prices and bulk sizes.

But the wholesale retailer’s origin story is a bit complicated. You see, modern-day Costco is actually the result of a 1993 merger between Price Club and Costco. Price Club kicked off in 1976, and Costco followed suit seven years later.

Read more: 50 foods that Costco employees and members love

Costco provided Business Insider with a number of photos of the company’s first warehouse.

These images provide a glimpse into what making a Costco run would've looked like back when Ronald Reagan was in the White House and "Maniac" was topping the Billboard charts.

Jim Sinegal and Jeff Brotman first dreamed up the idea for Costco Wholesale in 1982. Brotman, who died in 2017, was an attorney who was inspired to open a European-style wholesaler after taking a trip to France.

Source: "Service Management: The New Paradigm in Retailing"

Brotman told CNN in 2009 that he ended up cold-calling Sinegal, and the two hit it off.

Source: CNN

Sinegal was a retail executive who'd previously worked under the businessman Sol Price at a warehouse club called FedMart.

Source: "Service Management: The New Paradigm in Retailing"

Price had founded his own chain, Price Club, on July 12, 1976, in San Diego. Price Club exclusively offered memberships to small-business owners.

Source: Costco

Sinegal and Brotman later told CNN that they planned to essentially "clone Price Club" when they launched the first-ever Costco in Seattle in 1983.

Source: Costco

Years later, Price Club and Costco merged to become the Costco we all know and love today.

Source: Microsoft

But the first warehouse bearing the Costco name kicked off its grand opening with a business show on September 15, 1983.

Back when it first opened its doors, Costco offered business owners memberships for a $25 annual fee.

Meanwhile, "Group Gold" Costco members could shell out $30 a year to gain access to the warehouse chain.

Sinegal told the Motley Fool that the chain's first 100,000-square-foot warehouse was a "pretty simple facility" that lacked "many of the enhancements that we've added to the business since then."

Source: Motley Fool

In 2009, he also told CNN that the "crowds weren't overwhelming" at first, but "business built up" gradually. Sinegal served as Costco's CEO from 1983 until his retirement in 2011.

Source: CNN

Costco's low-priced, bulk-size offerings ended up catching on with shoppers.

Source: CNN

Less than a year after it was founded, Costco began to expand across the Pacific Northwest ...

Source: Costco

... launching stores in Portland and Spokane in 1983.

Source: Costco

Sinegal explained the chain's rapid expansion to the Los Angeles Times in 1985, saying, "We are working to get established in certain markets, to preempt those markets."

Source: The Los Angeles Times

The emergence of Sam's Club, Walmart's answer to the influx of members-only warehouse clubs, also spurred further expansion.

Source: Sam's Club

"When Walmart announced it was going into the discount warehouse business, we had to compete and grow quickly," Brotman told CNN in 2009.

Source: CNN

"That's why we expanded as fast as we did," the Costco cofounder said.

Source: The Los Angeles Times

By the end of 1984, 200,000 Americans had become Costco members.

Source: Costco

That same year, The Associated Press dubbed both Price Club and Costco as "key players" in the wholesale-retail game.

Source: Newspapers.com

Costco filed for an IPO on December 5, 1985, according to the company's website. Price Club had already gone public back in 1980.

Source: Costco

Investopedia calculated that anyone who bought 100 shares of Costco — at $10 a pop — would have made $138,768 by December 1, 2018.

Source: Investopedia

Just three years after opening its doors, Costco was a $1 billion company, Sinegal told CNN.

Source: CNN

At that point, the chain boasted "17 locations, 1.3 million members, and 3,740 employees," according to Costco's website.

Source: Costco

Costco and Price Club merged in 1993. Initially, the new company went by PriceCostco, ultimately switching to the name Costco Companies Inc. in 1997.

Source: Costco

A former employee who started at Price Club in 1984 and stayed with the company for 20 years told Business Insider that initially after the merger, there was a slight divide between "red" Costco warehouses and "blue" Price Club warehouses.

"When I was a corporate auditor for the company, the first thing the folks at the warehouse would ask me is, 'Are you red or blue?'" he said.

But he added that employees eventually got on the same page. "It wasn't really a bad thing," the former employee said. "Price Club had evolved into a different animal, and Costco really took us back to bare bones."

Are you a current or former Costco employee with a story to share? Email [email protected].