Import equal prices for products

Good afternoon! I want to make changes in the price of goods (purchase, purchase -10% and іn, yakі vivedenі yak addatkovі fields) through іksel Previously, the MVP had an elementary shvidko. Tell me how at once it’s so easy to grow I tried through the Postal Service and price lists, there I can’t turn the required fields with purchase equals. And I'm not a store with postal workers, but a picker myself, and I just want to remember the purchase for my goods, as they were brought in from the box. Once. Without actobatic studies MVP has more simple functions, you can see it on YouTube. At the same time, practically nothing is explained about the OS ...