There are a couple of things we can do here currently.
1. Editing the workings of the quote manually when you need to adjust the price if it is an on the fly price change.
This changes the price for that one quantity on that one production path:
This way is how you would control the price is was a custom one off price.
2. The second option to you is for if you have set cheaper prices based on quantity of sheets purchased and for a job.
This way is to add in rules on the stock size details based on the size and the quantity:
Then when you get to the quote and you are filling it out based on the size you can select the set stock rate. If you leave it on Auto then the system will look at the rules if any apply:
You have the ability to either the default or the Special Rate Rule that was created for this stock and stock size:
If it is left on default then the system will price accordingly and in this example you can see that it has pulled in the price based on those rules.
The rule we entered was for over 100,000 sheets to charge $0.05 per sheet.
You will see in these screenshots that these two quantity hit both options so the stock price is different.
For 10,000:
For 15,000: