There are two ways you can change the price after you push a product to shop: in the Ali Orders app and in the Shopify admin.
I. Editing a price in the Ali Orders app
Go to Ali Orders Dashboard > Product List > Look for a product which you wan to change a price > Edit product.
A new window is opened, then go to Variants and check a price > Save.
II. Editing a price in the Shopify Admin
Go to Shopify Dashboard > Products > Click on products name > Scroll down > There's price section > You can change it there and save.
I hope this might be helpful for you.