Both prices are token amounts. The 2 April 2025 forum price list also showed both at 1 KC, same as the live store.

Merchant items and prices

BianKO store merchant items
ItemStore tabPriceTooltip says
[Arty] Offline Merchanting Elite Club 1 KC Type Cospre; "Cannot be traded or sold"
Slave Merchant Scroll Elite Club 1 KC Type Misc; no description

The Offline Merchanting tooltip reads "Cannot be traded or sold", so you can't pass it to another player or sell it to an NPC.

Offline merchant vs slave merchant

BianKO's site doesn't explain the difference. The forum had three related entries; only their titles survive in the archive:

  • "Slave Merchant Nedir? Nasıl Kullanılır?" (what slave merchant is and how to use it), guides section, 29 March 2025.
  • "Gelişmiş Merchant Sistemi Nedir?" (the advanced merchant system), ARTY features section, 30 March 2025.
  • The OASIS launch post lists "Slave Merchant" among its game guide topics and "Yenilenmiş Merchant" (revamped merchant) among the ARTY features.

So the server has both a slave merchant and ARTY's revamped merchant window, with no details on the site. ARTY's new PM system is also listed, with trade, party, combat and emoji tabs.

Offline merchant yes, offline mining no

The OASIS feature list says there's no offline mining, and no Golden or regular Mattock. So an offline character can run a shop but can't mine. For mining there's only Auto Mining: no premium needed, and the Auto Mining Exchange Voucher costs 350 AB.

Rules to know before you open a shop

  1. Buying or selling GB, items, characters or KC for real money is banned; accounts caught doing it are removed permanently.
  2. Handing out items in the market is an instant ban, with no questions asked.
  3. Scamming players out of items or accounts, or even trying to, is banned.
  4. Kings can't trade in-game; if they do, their king title is removed.

The client limit is 3 characters per PC and 6 per IP. The site doesn't say whether a character left in offline merchant counts toward that. The OASIS launch post says GB is meant to stay valuable and will be kept in check with GB sink events, so keep that in mind when you price your shop.

Keeping a shop account safe

A character sitting in merchant with items for sale makes the account worth stealing. BianKO's sign-up form asks for a separate item lock password on top of your login password, and every page of the site recommends OTP. Under the user agreement, accounts without OTP are the player's own responsibility, and so is anything that happens after you share your login with a friend.

FAQ

Does offline merchant cost anything on BianKO?
Only a token amount: [Arty] Offline Merchanting is 1 KC in the store. Slave Merchant Scroll is 1 KC too.
Can you trade the Offline Merchanting item?
No. Its tooltip says it can't be traded or sold.
How do you set up a slave merchant?
The forum had a guide called "Slave Merchant Nedir? Nasıl Kullanılır?", but its text isn't archived. BianKO's website doesn't list the steps.
Can you sell merchant items for real money?
No. Selling GB, items, characters or KC for real money is explicitly banned in the user agreement, and the penalty is a permanent ban.

Related guides