Enable bulk update product prices by using CSV and sync to e-Commerce platforms

Hi there! We are a company established in Malaysia, in the e-commerce industry. With the ever increasing number of products and stores to manage, we are having severe difficulties in updating the prices of products being sold all at once. We have been subscribed to a solution provider who allows bulk updating of product prices to take place but we are still not very satisfied as it is extremely time consuming. We are looking for a solution where we can update the prices through a web app or GUI. In the screen record, you will be able to see the layout of the solution we are currently using. We are looking for a developer who can take advantage of this readily available feature and create an app with a simpler, user friendly app that will enable us to update the price of the product in different shops all at once. We expect to see the features below in the pursuit of simplifying things. 1. We only need to input the product price at the main shop 2. The prices for the rest of the shop will be auto-calculated according to the discount allocated to each shop (The discount can be in the form of percentage or dollar amount - the discount should be editable at all times) 3. The need for sync button at the end to upload the edited informations into the e-commerce platforms. 4. The discounts allocated should be saved for preview at a later part of the day. 5. Search function to search and pull up any advertisements ( listings ) that we want to see. We are hoping that the user interface of the app can be similar to that of the photos and excel attached. Please message us for more information.