The scenario:

I would like to configure an Item of type "Sales with Service Commitment". I would like to trigger a single sale of an item and additionally a monthly service via subscription billing.

So far no problem with subscription billing.

The issue:

Unfortunately it is not possible to provide a distinct price for the monthly service instead of being tied to a percentage amount of the item or document price.

The solution:

It would be very usefull to have the possibility to name a price on the level of the subscription packages.