Editing Artifact Merchants

{{buildings}}
{| border cellpadding="4" style="border:1 solid; text-align:center; background-color:#{{Purple 4}}; margin-right:20px; margin-bottom:10px; float:left;"
| [[File:Adventure Map Tower fort.gif|x90px|Tower|link=Tower]] || [[File:Tower artifact merchants (outline).gif|border|200px]]
|-
| [[File:Adventure Map Dungeon fort.gif|x90px|Dungeon|link=Dungeon]] || [[File:Dungeon artifact merchants (outline).gif|border|200px]]
|-
| [[File:Adventure Map Conflux fort.gif|x90px|Conflux|link=Conflux]] || [[File:Conflux artifact merchants (outline).gif|border|200px]]
|- class=onlyhota
| [[File:Adventure Map Factory fort (HotA).gif|90px|Factory|link=Factory]]<br/>{{wh}} || [[File:Factory artifact merchants (outline).gif|border|200px]]
|}

'''Building cost:''' 10000 {{G}}.<br>'''Buildings required:''' [[Marketplace]].<br>

'''Artifact merchants''' is a building that can be constructed in [[Tower]], [[Dungeon]]{{swh|, [[Conflux]], and [[Factory]]{{-wh}}| and [[Conflux]]|noicon=}}. It enables visiting heroes to buy or sell [[artifact]]s. The set of artifacts available for sale are the same in every merchant, regardless of the town, the town type or the player. The available artifacts contain three [[List of artifacts sorted by class#Treasure artifacts|treasure artifacts]], three [[List of artifacts sorted by class#Minor artifacts|minor artifacts]], and one [[List of artifacts sorted by class#Major artifacts|major artifact]]. Once an artifact is purchased, it is gone from all artifact merchants. At the beginning of each month, the set of artifacts available for sale is renewed.

The [[adventure map]] equivalent is the [[Black Market]].

== Price of artifacts ==
Every artifact has a so called [[basic cost]], from where the sell price and the buy price is determined. The price depends on how many [[marketplace]]s the player owns. The rule of thumb is, that the more marketplaces, the cheaper are the buy prices and the higher are the sell prices.

{| style="background: transparent; font-size: 125%;" 
|<pre>PRICE (buy) = 5 &times; B / (1 + (M - 1) &times; 0,25)

  where   B = basic cost of an artifact
          M = number of marketplaces (max. 9)

PRICE (sell) = B &times; (1 + (M - 1) &times; 0,25) / 5

  where   B = basic cost of an artifact
          M = number of marketplaces (max. 9)</pre>
|}

===Exploit===
If the player owns zero marketplaces, but accesses an artifact merchant through a town owned by an ally, artifacts can be bought at a price of zero gold. This is fixed by the [[Heroes 3 HD|HD mod]] and {{hota}}.

[[Category: Special buildings]]
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