How Compare at Price setting works
Keep in mind that this option has no impact on products that are already in your Shopify stores.
Assume that the selling price setting is enabled with the "Multiple" value set to 2 and that the compare at price setting is also enabled with the "Multiple" value set to 3.
If a Taobao product is 10$, the purchasing fee is 1$, and local shipping costs 50cents, when you import the product into your Dropast list, the selling price is automatically set to 23$. The compare at price will then be set to 69$ automatically.
Before importing the product into your Shopify store, you will, however, be able to edit it