A bought lead list is stale before the first call
A list of 150 local businesses, bought from a data broker, is a snapshot. Businesses close, move, change owners and get new numbers continuously, and the list doesn't know any of that happened. By the time it's been through a sales cycle, some real but unknown fraction of it is already wrong, and nobody finds out which entries until a call goes nowhere.
That decay is the actual cost of a bought list, more than the $300 to $900 it typically runs for 150 names. You're not paying for 150 leads, you're paying for however many of those 150 still resolve to a real, reachable business by the time someone on your team dials, and that number quietly shrinks every week the list sits unused.
The alternative isn't a better list, it's not buying a static one in the first place. A tool that sweeps a trade and a radius on demand, scores each business on how badly it needs what you're selling, and flags listings that look fake or abandoned before anyone wastes a call on them, is regenerating the list at the moment you're about to use it instead of months before.
Priced against the alternative, that's the arithmetic: a bought list costs $300 to $900 and starts decaying immediately. The Lead Finder and Call List on the catalog page is built to pay for itself after about five list purchases, and after that, every list is current instead of aging.
A list only matters once there's a pitch behind it. What to actually check on each business before calling is covered in what to check in a local SEO audit before you pitch a business.