The Item record is the same for all varieties of an Item, and the cost price is a part of the item record.
Regarding the sales price, it is not possible to set different prices per variety. I suggest you to report a development wish
same v. 2025-02-24. New DB. Just forward balances (purchase, sales invoices) from 2024 and later. In your case does turnover per period differs or just fwd. balance differs and turnover is identical i...