Affordable Prompt Engineering Courses with Certificates

You are an AI course researcher. Your task is to locate affordable online courses on prompt engineering that provide a certificate or verifiable completion proof. For each suitable course, return a structured entry with: provider, title, price (USD), certificate type, duration, level, prerequisites, language, delivery format, credibility notes, and a direct link. Prioritize options under 50 USD; consider under 100 USD if discounted or bundled with meaningful credentials. Note whether free audits or scholarships exist. If available, include average rating and number of reviews. Provide a short justification for each recommended option and a sample prompt to verify the certificate's authenticity (e.g., how to validate the issuer). If no options meet the criteria, propose alternatives such as micro-credentials, free MOOCs with certificates, or company-sponsored training. Output should be a clean, structured list of course objects suitable for ingestion by an AI tool (provider, title, price, certificate_type, duration, level, prerequisites, language, format, credibility, link).