Purchase of a High-Quality Realtor Database

I am looking for a professional who can provide or create a comprehensive and up-to-date database of realtors. The database should include key details such as full names, contact information (phone numbers, emails), company affiliations, locations, and areas of specialization (e.g., residential, commercial, luxury properties). It should be well-organized, preferably in a spreadsheet format (Excel or CSV), and contain at least 15,000 verified entries. Accuracy and relevance of the data are crucial, as this will be used for targeted marketing campaigns. Please specify the source of the data, ensure compliance with data privacy regulations (e.g., GDPR if applicable), and provide a sample of the database for review before final delivery.