Hi,

Instead of pricelists, use Discount & Loyalty Programs (sometimes called Promotion Programs).

Go to: Sales ->Products ->Discount & Loyalty Programs (Need to enable from settings)

Create a program:

    Conditions: Product Category = your category.

    Min Quantity: 20.

    Reward: Apply 50% discount.

Hope it helps.

Thank you Christoph.  I gave that a try and although your exact approach didn't have the effect of giving a discount on the entire order quantity, your approach prompted me to create a promotional discount that is valid for a specific price list with minimum purchase.  I will post my screenshots when I get enough Karma. 

Terry

Sounds like your using Pricelists. Using only these, you wont be able to get the described result.

You can however, when enabling Promotions, Loyalty & Gift Card at Sales -> Configuration and configure a rule similar to the following:

Go to Products -> Discount & Loyalty and create a new Program:

Program Type: Promotions

Rules & Rewards-tab:
Conditional rules:
Minimum Quantity: 1
Minimum Purchase: 0
Grant: 1 Promo point(s)
Product Domain: Match all of the following rules: Product Category = X or Y

Rewards:

Reward Type: Discount
Discount: 50% on Specific Product
Discount Product Domain: Match all of the following rules: Include archived Product Category = X or Y

In exchange of: 20 Promo Point(s)

Your Sales Orders (or POS or Quotes created via Website) would then result in something like this:

Reward button wont do anything (in the manual scenario of a Sale Order) since the Rule applies to 20+ items of Clothes or Food in my example:

With required quantity:

Or with more items in total matching the Program: