After selecting an item to deposit, click 'Edit' and you'll be able to change the listing price or the percentage.
Here's a video to help:
The amount entered by default is ~6% below the recommended price, so your item is listed for auction and is highly likely to receive bids. However, you can enter any price that you wish to list your item for.
If you list your item for 6% or less, it will be listed via our auction system.
If you list your item for more than 6%, it will skip the auction stage and go directly to the withdraw page.
You can read more about how this system works here: