I'm trying to use the embedded widget and running into 2 major hurdles which are show stoppers for me:

1) I have a setup fee that is charged based on the quantity of the subscription. For example, $10 setup fee per 1 subscription. If the customer adjusts the subscription quantity to 10 then I would like to see the setup fee adjust to $100. I can't find a way to do this currently. 

2) I can't find a way to embed the widget on my website and let my customer to be able to select multiple subscriptions. They have to check out separately for each subscription selected?