Not Your Average Thrift Store

3 menswear photos of man wearing bright, graphic fall outfit, a flat lay of jeans and a flanner and a man wearing an argyle vest and jeans

By Jessica Pruitt

In 1974, when Kerstin Block first had the idea for a different sort of secondhand shop, she never expected it to grow into what it is today – she just followed her love of thrift store shopping. “I came upon the idea that there must be other people who are equally addicted to this kind of shopping, but who didn’t want to sort through as much stuff.” Enter a whole new business model – a resale shop where customers could buy hand-picked treasures in one place and also sell their clothes for trade or cash on-the-spot.

From Thrift Store to Resale Boutique: The First Buffalo Exchange

At the time, Kerstin had recently been fired from a job at a local furniture shop. When she mentioned that she’d like to try opening her own business, her husband Spencer was all for it. To start, they rented out a small 400 square foot space in Tucson, AZ and filled the store with pieces from Kerstin’s own closet. They also asked friends to bring things in. Soon enough, they had a bustling business buying, selling and trading the likes of denim skirts handmade by Kerstin, Hawaiian shirts and Kork-Ease sandals, drawing in lots of students from the University of Arizona. Their most common price? $3.50.

Kerstin Block outside the Buffalo Exchange

Men wearing a plaid sweater vest and brim hat

Originally from Sweden, Kerstin chose “Buffalo” because she liked the way it evoked the American West. Spencer contributed the “Exchange” half of the name since that’s precisely what they would be doing – opening up a shop where you could exchange your clothing for cash or trade on-the-spot, an uncommon model at the time. And just like that, they ran the business together, doing everything themselves. Kerstin was the face of the store, running the register and doing all the buying. Spencer worked behind the scenes, creating clothing racks out of water pipes and handling the accounting.

Resale wasn’t very popular at the time, but they knew there would always be people who wanted to find something cute for a good deal: they just didn’t necessarily want to dig through so many pieces in a thrift store setting. “We made it look like a little boutique,” says Kerstin. They handpicked each item based on what their customers were interested in buying and displayed them in a fun, easy-to-shop space.

Charting New Territory

Kerstin and Spencer didn’t know much about the fashion business, but they weren’t afraid to venture into uncharted territory. Par for the course for Kerstin, who struck out on her own at the age of 18, taking a boat over from Sweden to study at the University of Arizona. What they initially lacked in resale knowledge, they made up for in strong values. “We built our business on a lot of principles,” she says, “such as respecting people and treating everybody fairly and listening to people. Those are our tenets in business.”

Two people hitchhiking with a sign that says buffalo exchange

As they opened more locations – a store here and a store there – those tenets only grew. They knew how important it was to be honest and the value of people – both employees and customers alike. After all, they relied on their customers to bring in clothing and they relied on their employees to build a diverse inventory. To do this, they valued individuality and embraced the things that make each person unique. They empowered people, taking into consideration what they wanted out of the job and teaching them how the business works.

Perhaps it’s these tenets (not to mention a true passion for clothing) that have kept the business going strong for 50 years and counting. Today, Buffalo Exchange is still owned and operated out of Tucson, AZ. After 50 years of running Buffalo Exchange, Kerstin retired in 2024. Her daughter, Rebecca Block, continues to run the company as CEO. “What I’m most proud of is how much we’ve been able to empower people – especially women,” she says. “That and the clothes. It’s always been about the clothes.” Now, that love for fashion has spread to over 40 stores – and growing all the time. Visit BuffaloExchange.com/Locations to find one near you!

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