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Shopping agents expose price opacity
Routing around Amazon
Asked for a better price on a $400 hub for a Mac Studio, a shopping bot pointed to the manufacturer's own website, where a first-time customer saves 85 dollars, and it steered the purchase around Amazon.
Why retailers resist
Price discovery and transparency hurt anyone who benefits from opacity, leakage, and breakage. Big companies with resident services are therefore expected to block third-party agents. Amazon said this week that it needs to block them and has taken action before, starting with Perplexity. Shopify added API access to its stores.
Errands for agents
The same bots can go into an email account and list the services a person subscribes to but does not use, then unsubscribe from them, or handle returns. A shopper who asks for 20 graphic novels to read with the kids can get a list of 20, pick four, have them placed in the cart, and choose which house to ship to and which card to use.
How do shopping agents compare prices?
An agent searches the web, opens retailer pages, and reads the price, shipping cost, and any promotion shown. It can then compare totals across stores in a way that takes a person many browser tabs to do. Manufacturers' own stores often advertise a first-order discount in exchange for an email signup, and those offers appear only on the manufacturer's site. Price comparison sites have done a simpler version of this since the late 1990s.
Why do sellers benefit when prices are hidden?
Economist George Stigler argued in his 1961 paper The Economics of Information that searching for prices is costly, so identical goods end up selling at different prices. Each shopper stops looking once more searching seems not worth the time. Sellers who charge more keep customers who do not search. Stigler received the Nobel Memorial Prize in economics in 1982.
How do websites block automated shoppers?
The oldest tool is the robots.txt file, a convention from 1994 in which a site lists the pages automated visitors should avoid. Compliance is voluntary, so sites also use rate limits and bot-detection systems that examine browser behavior. Many require a login or a CAPTCHA before sensitive actions. Terms of service can also prohibit automated access.
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