Pre-requisites
Formula Pricing Config
Go to Feed Management --> Feed Mills
Select or create a Feed Mill and go to the Formula Pricing tab.
Select an effective date for the pricing to take effect.
If you are pricing deliveries in the past please make sure to get your date far enough back.
If no formulas are coming back, make sure that the feed mill is assigned to the Feed Formulas used at that mill.
You can then enter pricing for the feed type code and it will price all formulas underneath it that price orOR
You can enter pricing for each individual formula under each feed type
Save and close the form
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After it processes it will pull bring up the following screen:
This is going to pull up all the deliveries for the date range you entered and fill in the new price for the formula.
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All deliveries you want to update, make sure that Accept is checked on the form.
You can also manually change any of the pricing from this form by editing the Update Price field for the record you want.
Once you are done checking the form, you can then commit the pricing update.
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Example:
I committed the two deliveries in the screenshot below.
If I go to that flock 18139 and go to its feed deliveries and I can see that the delivery pricing was updated for the date of 8/8/13. 
Troubleshooting
If no feed types show up, then you will need to make sure to apply your feed mill to the feed deliveries on the flock.
Also, make sure the Feed Mill is the default on the farm.
