Hey Rick,
Thanks for reaching out.
In regards to the response times, apologies for the wait; our response time is one reply within 24 hours to each reply, and we just had many many support requests today. Thanks for your patience!
Next, in regards to your question, our plugins themselves do not offer any sort of “fee”-adding ability like you describe. Adding a “convenience fee” may be possible with WooCommerce itself, or other WooCommerce extensions, but our plugins do not provide this.
So, for assistance in adding these fees, I’d recommend checking out the support forums and extensions on http://woocommerce.com itself—if you find an extension that works with WooCommerce’s “Simple Product” product type, then it should work fine alongside our ticketing plugins! (You can ask in the support forums of the extension itself if it supports that product type).
Cheers,
George