Enumeration type PriceTypeEnumeration currently has enumeration values such as ListPrice, SalePrice, and MSRP.
There are a few more price types that are common in the industry such as MemberPrice (proposed in #3563), and also RegularPrice or StrikethroughPrice (a previously advertised and charged price). A RegularPrice or StrikethroughPrice is typically lower than a ListPrice or MSRP, but higher than a SalePrice, and we therefore propose to add either RegularPrice or StrikethroughPrice as new values under PriceTypeEnumeration.
StrikethroughPrice represents a more intuitive and visual form of a previous charged price, while RegularPrice might fit better with the existing enumeration values under PriceTypeEnumeration.