To Import Item Options go to Backoffice, then Items under Listings then click on Import Options.
After clicking, two options will show.
B. Download Template
If you already have the template for the Item Options then click Browse to upload your file, but if this is your first time adding Item Options then click Download Template, it will give you a file with your Items on your list inside. Open the file, below is the sample.
Note: Don't change or rename the row 1
When you open the file, you can now add Item Options on the Option column and add the price of the item on the Price cloumn. Below is the example.
Note: Don't change the column Id and Item Name
When your are done adding Item Options save the file then go back to Backoffice, Items under Listings and click Import Options then click Browse to upload the file and click OK.