Listing costs nothing and the commission applies only on a completed sale. Escrow protects you too: a confirmed handover cannot be charged back weeks later, which is exactly what happens on classifieds.
There are 39 Clash of Clans accounts on sale right now, and the median asking price is $8.92. Half of them sit between $5.48 and $28.26. These are live listings, not an estimate — you can open the catalogue and see every one of them.
On Clash of Clans the price follows progress rather than a single item: level, rank and how much of the roster is unlocked. State them exactly — a number that checks out sells faster than a generous description.
Listing is free and the commission applies only on a completed sale. Price follows what a buyer can check: hero levels stated next to the Town Hall rather than instead of it, laboratory progress, walls, and a Supercell ID that transfers cleanly. A fully developed base sells faster and higher than a rushed one two levels above it, and stating that openly is what separates a listing that sells from one that sits.
The application takes a few minutes and does not require an account. Listings go live after moderation, usually the same day.