From AppScenic Account, go to My Products.
Find the product you want to update the price formula for.
Now, you have two options to go on:
1. Click on the title of the product and land on its page.
On the top right corner of your product’s page, just under Product Groups, you have Price Formulas and Returns.
Under this section, just click on Price Formulas and choose the one you want for your product.
Click Save and you are all set.
2. From the My Products list, select the product you want to update.
On top of your product list, you can find the tab named Update Price For.
Under Update Price For you can choose either to Add Price Formula, and pick which formula you want, or Remove Price Formula.
Make your choice and click on Save.
And this is how you update the price formula for a product. :)