This document discusses assessing the value of open access agreements through usage statistics. It outlines key questions around negotiation, flipped journals, institutional budgets, and impact of policies that usage statistics could help answer. These include determining high-value titles, trends in open versus closed content usage, global impact and contribution to title flipping, and comparing usage of funded versus non-funded research outputs. The document also discusses taking a holistic view beyond just publisher platforms and aggregating item-level usage data alongside publication details to fully understand impacts. Jisc's work with global usage reports and IRUS is highlighted as ways they are exploring these issues.