WooCommerce alternative
Price lists and tiered pricing: WooCommerce or Statiq?
Give a regular customer their own price list and a lower price for larger quantities. Your customer only sees their price after logging in.
At WooCommerce
Prices per customer role and stepped discounts come with the paid plugin Wholesale Prices Premium ($99 to $199 a year) or the bundle at $299 a year. The free version offers fewer options.
At Statiq
A price list of their own per customer, tiered pricing from a quantity and a discount per customer, with no limit on the number of lists. If an item also has a promotional price, the customer gets the lowest. Prices are never in the public pages. Plan option: you can see which plans include it when you sign up.