For each product, we will provide a free demo version. You can download it from the product homepage and install it. Then use it to check if your file can be recovered.
The demo version will either show a preview of the recovered data, or output a fixed file, so that you can know whether the data you want can be recovered successfully.
For example, for DataNumen Outlook Repair, you can download the free demo version from https://www.datanumen.com/outlook-repair/dolkr.exe
If you are satisfied with the data recovered, then you can purchase the full version and get them.