Automating Pricing in Zoho Inventory Based on Brandline Quantity

Automating Pricing in Zoho Inventory Based on Brandline Quantity

I am currently setting up my Zoho Inventory system and would like to implement an automatic pricing feature for sales orders. We have created a custom field called "brandline" for our items. All products with the same brandline value should have the same price in the order.

For example, let's consider the brandline "Core100." I want to set it up so that when the total quantity of any items with brandline = "Core100" reaches 100, these items in the order will be priced at X. When the quantity reaches 200, the price should change to Y, and so on.

Could you please advise on how to achieve this specifically within Zoho Inventory? 

I would greatly appreciate any assistance.