Level 1: Casual Tester ($50-200/month) - Occasional tests - Basic feedback - Learning platforms
Level 2: Regular Tester ($200-500/month) - Weekly testing - Quality feedback - Multiple platforms
Level 3: Specialist Tester ($500-1000/month) - Specific niches - Detailed reports - Direct clients
Level 4: QA Consultant ($1000+/month) - Professional testing - Test planning - Team training