¶ Marketplace
The Marketplace is a large building that allows products to be traded between Crews on asteroids.
Marketplace buildings each have their own independent order book market, where limit buy and sell orders may be placed, and market buy and sell orders will match with them.
The Crew that owns the Marketplace can choose which other Crews or Starknet accounts are able to conduct which types of trades on their Marketplace. They can also choose to require fees be paid by users of the Marketplace, and are able to select which products may be traded on the Marketplace.
All trades on Marketplaces are denominated in SWAY.
¶ Construction Supplies
| Icon | Product | Amount |
|---|---|---|
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Cement | 3000t |
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Steel Beam | 2500t |
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Steel Sheet | 3000t |
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Steel Cable | 500t |
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Large Thrust Bearing | 6 |
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Power Module | 60 |
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Avionics Module | 160 |
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Thermal Module | 40 |
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Habitation Module | 80 |
¶ Construction Time
The Marketplace requires a nominal 120 real-life hours (5 real-life days) to construct. Bonuses and penalties can increase or decrease this time.
¶ Available Actions
| Icon | Action | Description |
|---|---|---|
 |
Limit Sell | Create a limit sell order, offering to sell a certain number of units of a product at a certain price per unit. The product is sent from the origin inventory to the Marketplace, but space for the product for sale is reserved in the origin inventory until and unless the sell order is matched with a market buy order. The placing Crew must travel to the Marketplace and back. |
 |
Limit Buy | Create a limit buy order, offering to buy a certain number of units of a product at a certain price per unit. The offered SWAY is sent into an escrow account until and unless the order is matched with a market sell order. The placing Crew must travel to the Marketplace and back. |
 |
Market Sell | Market sell a certain number of units of a product into the highest-priced limit buy orders. Only possible if there is enough limit buy order liquidity in the Marketplace to match the market sell. The placing Crew does not need to travel to the Marketplace. |
 |
Market Buy | Market buy a certain number of units of a product from the lowest-priced limit sell orders. Only possible if there is enough limit sell order liquidity on the Marketplace to match the market buy. The placing Crew does not need to travel to the Marketplace. |
 |
Cancel Limit Order | Cancel an existing limit buy or limit sell. Needs to be done by the Crew that placed the limit order. The canceling Crew does not need to travel to the Marketplace, but if a limit sell is being canceled, the goods do need to travel from the Marketplace back to their origin inventory. |
| N/A | Update Marketplace Settings | Set which products may be traded in the Marketplace, as well as the maker and taker fees. Can only be performed by the Crew that owns the Marketplace. |
 |
Deconstruct | Deconstruct the Marketplace. A Marketplace construction site is created and 90%+ of the construction supplies are returned, but rounded down to the nearest whole unit. |
¶ Product Limit
Up to 20 products may be traded in a given Marketplace. The owning Crew can set which ones are tradeable.
¶ Maker and Taker Fees
Maker fees are charged to market makers, that is, those people who place limit orders (either buying or selling). Taker fees are charged to market takers, that is, those people who place market orders (either buying or selling). For more information on these participants, see order book market. Maker fees are invisible to takers, and taker fees are invisible to makers. Fees are paid to the Starknet account to which the Crew that owns the Marketplace is delegated, at the time that an order is matched.
¶ Inventory?
A common misconception is that Marketplaces have their own inventory space for products that are being limit sold. This is not the case. Products put up for sale from an origin inventory do need to “travel to” the Marketplace, but space is reserved in that origin inventory; the goods have not fully left the origin inventory. That reservation is only freed up if the products actually sell, i.e. if the limit sell matches with a market buy. So space in e.g. a Warehouses is needed for limit selling products. This makes sure that there will always be somewhere for the products to go if the limit sell is canceled.
When goods are purchased on a Marketplace, they will all be “at” the Marketplace for purposes of calculating the subsequent travel time to the buyer’s inventory; this is the reason the goods “travel to” the Marketplace: to ensure all goods on the Marketplace will have equal travel time to a given buyer’s inventory, rather than coming from potentially many different origins.
¶ Guide
See the Marketplace guide for detailed how-tos.