Explains how card payment processing costs work, covering interchange, network assessments, processor markup and merchant category codes. Gives merchants practical steps for reading statements and telling genuine network changes from processor markup increases.
Website: https://paymentswithal.com/
Long-form essays on financial infrastructure such as payments, banking regulation, fraud and compliance, written from an insider's perspective. Readers get historical context, regulatory explanation and analysis of live policy controversies.
Research-driven analysis of crypto and fintech economics aimed at venture investors, examining who captures value in stablecoin payments, onchain finance and companies like Rain. Each issue reconstructs figures from primary data sources and flags methodological caveats.
Patrick McKenzie reads and expands on his Bits about Money essays about the plumbing of the financial system, such as payments finality, credit card economics and charitable giving infrastructure. Each episode pairs an explanation of how the system works with concrete case studies and updated postscripts.
Eric Product Manager is a blog by an agentic commerce product manager at eBay, analysing how AI shopping agents, checkout protocols and retailer policies will reshape online buying. Each issue combines sourced market data with the author's opinionated, clearly caveated analysis of what merchants should expect.
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