50K Domain Decision-Maker Leads

I have a list of 50,000 company domains that now need to become a rich, ready-to-use prospect database. For every domain, I need 7–9 relevant contacts, prioritising true decision-makers—no catch-all or generic addresses... (Budget: $10 - $30 USD, Jobs: Data Annotation, Data Collection, Data Entry, Data Management, Data Processing, Database Development, Excel, Lead Generation, Research, Web Search)