Pricing Page Teardown from ProfitWell - Data and banter behind the best (and worst) pricing pages
SaaS Marketer - Biweekly, insanely actionable SaaS marketing case studies.
SaaS Pricing Page eBook - Learn from the best practices of over 270 top SaaS companies
Zero to Marketing - Short case studies that help you get better at marketing
Stripe Billing - A set of tools for billing and subscriptions
EnterpriseReady - A guide to building the SaaS features that enterprises love.