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Costco in the Krillo Index

When shoppers in the United States ask ChatGPT and Gemini where to buy home medical supplies, is Costco named? This is the answer from our latest monthly measurement, November 2026.

#5

of 61 stores measured

12/35

buying questions where AI names it; the category median is 1

6

questions where AI recommends it outright

Measured with ChatGPT and Gemini, the same questions for every store in this category, asked in the language of the market. Read how we measure.

Around Costco

See the full ranking for Home medical supplies

What AI says about Costco

In the 14 answers that name Costco, AI mentions: premium (3x), wide range (1x), low prices (1x).

“For most people in the U.S., the best place to buy a blood pressure monitor online is Costco, Amazon (sold by the manufacturer or Amazon), or a major pharmacy retailer like CVS/Walgreens—provided you choose a validated upper-arm monitor.”

ChatGPT, asked: where is the best place to buy a blood pressure monitor online in the US

“If the scooter doesn't fit your body, vehicle, or home, Costco will generally take it back without restocking fees.”

Gemini, asked: where should I go online to buy a mobility scooter in the US

“Costco Hearing Aid Centers are widely considered by consumer advocates to be the absolute gold standard for value in the United States, offering high-end prescription aids (rebranded from major manufacturers like Philips and Rexton) for...”

Gemini, asked: which American online store sells hearing aids that I can trust

Quoted word for word from the answers in our measurement. What AI says about your store decides which buying questions it names you for.

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