Price Changes for 700 products in Magento Amazon and Walmart

Description

I need price changes done for 700 items approximately 2100 total items.Magento, Walmart and Amazon. The prices will all be raised 20% from there current costs.The only thing I will give you is the sku number. I do not have the current costs in a csv.This needs to all be done via csv. No manual entries. You will have to prove to me that you can do this and do about 25 products via csv, EXPERIENCE ONLY. I AM TIRED OF BEING LIED TO ON PPH, Thank you,