On the other hand, if the website interface under discussion is the part that
the seller will be using to "add" (or input/specify/configure) details of the product/servicing offerings to be shown to customers, then the source text makes sense.
For example, eBay has introduced an option for
sellers to set a lower price that will apply to larger-volume orders.
"Can I add Volume pricing when I list?
If you list through Seller Hub you’ll see an option to add Volume pricing in the Sell it faster section of your listing flow: [screenshot]"
https://pages.ebay.com/specialoffers/volumepricing/index.htm..."Add Volume Pricing. This is a fairly new feature added on eBay. This can be one of the easiest ways sellers incentivize customers to buy more at a time. Setting up a volume price on eBay is a very easy one-step process at the end of your product edit page."
https://hacksbylia.com/business-hacks/ecommerce/10-tips-to-i...Having said that, the eBay website mixes "price" and "discount"
"How To Offer A Volume Price or Discount On eBay"
https://hacksbylia.com/business-hacks/ecommerce/how-to-offer...