The developer has a brilliant ticket system and is available on skype so you can discuss issues you have and resolve them.
I would definitly recommend this extension I had never had so much help and support in getting an extension working and all set to my requirements.
Normally I find that an extension is to a generic standard and if you need it to do something else you have to modify it. On this I have asked for and received a top product working better than any other item I have downloaded. This isn't my first commercial extension, however after the service and support offered, I doubt anyone can beat their service.
This will even work to help sort out some of the issues on the VM2 release with issues on custom fields. You can add them to your item as you import them, thus saving a lot of hard work later.
If you need to put products on your site without messing around with CSV files then you should definitly get this extension.