We get this question a lot. What is the difference between the demo version of your software and the paid version? The demo version is only there so you can see your files and even open some of them. The only time you should ever purchase the software is after you have run the demo, you can see the files you want to recover and you are ready to recover them.
The only difference between the demo and the full version is the ability to save your data. This is true for GetDataBack, DiskExplorer, Captain Nemo, RAID Reconstructor, NAS Data Recovery and RAID Recovery for Windows. If you are purchasing the software, you have already tested it and are sure it can do what you need it to do.