Need Advice on Selling Business2Business Databases

Hi Guys,

My first post here, would be very thankful for any advice. So I have a large amount of B2B data, including phone number, name, email, address etc. for a wide range of different business niche's. The databases contain around 50,000 entries each, all contained within an excel document. What do you think is the best method/strategy to go about selling these?

Thanks a lot

Build a rapport and sell them ideas. Sell swaps, etc

Manually look for companies that are selling B2B services to those companies and start cold calling them one by one.