To reduce the price of your listing, go to the item page and click the "Edit Listing" button in the top left corner.
If your listing was originally created prior to April 2018, you will need to complete a few extra steps on the listing form before saving your listing with a markdown price. You will receive error messages to direct you to the new required fields that will need your attention.
You can also click the “Markdown” button for your listing on your My Listings page.
Please note the markdown minimum of 10%. Once a listing is published, the price cannot be raised.