In the desktop editions you can calculate per-item discounts with the FormCalc SST for QuickBooks add-on, or possibly also with the CCRQInvoice add-on (I'm less...
If you use QuickBooks for single-entry cash basis accounting you can set up an Equity account for "throwing away" the parts of double-entry transactions you don...
There's a book called The QuickBooks Farm Accounting Cookbook, Volume IV which deals with cash basis fixed asset accounting in farming/ranching. It uses Invento...
I've worked with QuickBooks in agriculture for a lot of years, and I understand what you are wanting. But it is not a deficiency with QuickBooks; it's a problem...
Another option is to use one of the calculation add-ons for the QuickBooks desktop editions, either FormCalc SST for QuickBooks, or CCRQInvoice. Both products c...