What are the Galactic Trade Network costs?

Solution 1:

What you pay to get an item to an auction is a deposit. And you get it back when the auction ends, whether successfully or not. If the item is sold, a commission is deduced from the credits you receive.

For a two-day auction, the deposit is 15 % of the asking price. The commission is 3 % of the price (Source: my own calculations based on 4 successful sales.)

For example, in the sale from the screenshot below, the asking price was 1800 credits, the deposit was 15 % of that, or 270 credits (it was a two-day auction) and the commision was 3 % of the price, or 54 credits. So, I received 1800 + 270 - 54 = 2016 credits.