Summary
Your app is close to demo-ready but not production-ready. The largest risks are auth and data access need explicit authorization evidence, payment completion can drift from application state, admin actions need server-side role enforcement. We estimate 7,500 to 18,000 USD before a fixed-scope deep semantic review.
85-100 Ready with minor checks70-84 Close, targeted fixes50-69 Not launch-ready0-49 High-risk or incomplete