I need a plugin for wordpress that can calculate different fees. What I need is just the Exchange E-currencies table from here http://demo.auto-exchanger.com/ And from the admin panel I should have a table in which I can set the different fees for different payment processors.
Maybe this will help you (look at screenshot) https://wordpress.org/plugins/calculated-fields-form/screenshots/
I would be interested in working with you on this job. I have sent you a private message about my expertise and contact details.