If the scraper contacted the client, said what they need the data for, and (probably) paid for api access, then my client would probably go for it. My client i

If the scraper contacted the client, said what they need the data for, and (probably) paid for api access, then my client would probably go for it. My client is under no obligation to make access to this data easier. It's not really their data either; the information is property addesses, owner names and addresses, and tax assessments and payments. My client wouldn't want to make it easier for scammers to get that data. So they're not going to do anything unless they know the scraper is legit. If that's the case, the api would require authentication, and any fees would be for the server load, not the data.