This is particularly true if you are in a high cost labor market or have highly paid employees who spend part of their day entering data. This is enough to pay for professional data entry software. And these savings continue year after year. Don't forget to factor in the labor costs of setting up and maintaining data entry applications. If you are using highly paid programmers, you may find that you can free them up for other projects when you get data entry software.
Some systems are so easy to use that operators can set up new jobs and maintain the system.
The more important accuracy is, the more seriously you should look at professional data entry software. In addition to increased productivity, one of the major benefits of data entry software is error reduction. If your data is text that will be read but not processed further, then errors may not be important. Readers can get the meaning from the context. You also need to look at how much it costs your organization to correct errors.