New Browser Extension Converts Prices to Bitcoin, Encourages Mindful Spending

Coin WorldThursday, Jun 12, 2025 11:45 am ET
2min read

Opportunity Cost, a new browser extension, has been launched to convert prices on every website into Bitcoin and Satoshis. This innovative tool aims to foster mass adoption of Bitcoin by reshaping how consumers perceive value. Created by Marty Bent, the extension helps users visualize spending in Bitcoin terms, encouraging more thoughtful purchasing decisions by highlighting the opportunity cost of fiat transactions. Bent sees Opportunity Cost as a memetic device to help people conceptualize a future where Bitcoin is the dominant unit of account, potentially accelerating mainstream acceptance.

The Opportunity Cost browser extension is available on Chrome and Brave, with Firefox support coming soon. It provides users with a fresh perspective on the value of everyday purchases by converting fiat prices into Bitcoin denominations. This approach leverages Bitcoin’s fixed supply of 21 million coins, contrasting sharply with inflationary fiat currencies, making it a compelling store of value. For example, a blender priced at 84,182 Sats or a Lamborghini Aventador at 3.83 BTC illustrates the tangible cost in Bitcoin terms, making the value proposition more relatable for crypto enthusiasts and newcomers alike.

Bent emphasizes that the extension is designed as a memetic tool to help “normies” — everyday users unfamiliar with Bitcoin — conceptualize a Bitcoin-based economy. While initial adoption may be limited to crypto-savvy individuals, the viral nature of social media sharing can amplify its reach. Users frequently share screenshots of prices converted into Bitcoin, sparking curiosity and dialogue among wider audiences. This grassroots approach aligns with Bent’s vision of organically growing Bitcoin’s user base through education and engagement rather than direct persuasion.

One of the core motivations behind Opportunity Cost is to illustrate the inflationary nature of fiat currencies compared to Bitcoin’s deflationary characteristics. Bent criticizes stablecoins, which are pegged to fiat currencies, as inherently unstable due to their reliance on depreciating money. By pricing goods in Bitcoin, users can observe how the rising value of BTC affects purchasing power over time, even as fiat prices increase due to inflation. The extension also serves as a behavioral nudge, prompting users to evaluate whether their purchases are worth the equivalent amount of Bitcoin they could accumulate instead. This perspective encourages more deliberate spending and investment decisions, potentially curbing reckless consumerism.

Beyond its public adoption goals, Opportunity Cost is integrated into TFTC’s operational model, where employees receive partial payment in Bitcoin. This internal use case helps staff better understand Bitcoin’s value and pricing dynamics in real time. Bent’s daily use of Bitcoin for payments underscores his commitment to the cryptocurrency as a superior form of money, reinforcing the extension’s practical relevance. By bridging the gap between abstract cryptocurrency concepts and everyday financial decisions, Opportunity Cost exemplifies how technology can facilitate a smoother transition to a Bitcoin-centric economy.

Opportunity Cost represents a significant step toward mainstream Bitcoin adoption by transforming how consumers perceive price and value online. By converting fiat prices into Bitcoin and Satoshis, it not only educates users but also encourages more mindful spending habits aligned with Bitcoin’s unique monetary properties. As the extension gains traction and expands compatibility, it may well become an essential tool for both crypto enthusiasts and newcomers seeking to understand the true cost of their purchases in a Bitcoin economy.