Hi Luierhoek ,
Thank you very much for your post.
Not sure what the other plugin is and as we do not support 3rd parties, I can not help you with that. However, total stock value can be seen in our widget you can locate in ATUM-Dashboard. If you can not see it, press the add widget button at the bottom.
Regarding Exports, we have the most advanced export premium add-on on offer.
Hope this helps.
Pavel