Marketplace

A place in your town, where you can trade surplus resources for scarce ones.

If you have many marketplaces you get better trades:

• BR - Basic resources (Wood, Ore)
• MR - Magical resources (Crystal, Gems, Mercury, Sulfur)

Marketplaces	Gold->BR	Gold->MR	BR->Gold	BR->BR	BR->MR	MR->Gold	MR->BR	MR->MR	Buy/Sell Ratio
1 Marketplace	2500->1	5000->1	1->25	10->1	20->1	1->50	5->1	10->1	100	(400/4)
2 Marketplaces	1667->1	3333->1	1->37	7->1	13->1	1->75	3->1	7->1	44.44444...	(400/9)
3 Marketplaces	1250->1	2500->1	1->50	5->1	10->1	1->100	3->1	5->1	25	(400/16)
4 Marketplaces	1000->1	2000->1	1->62	4->1	8->1	1->125	2->1	4->1	16	(400/25)
5 Marketplaces	833->1	1667->1	1->75	3->1	7->1	1->150	2->1	3->1	11.11111...	(400/36)
6 Marketplaces	714->1	1429->1	1->88	3->1	6->1	1->175	1->1	3->1	8.16327...	(400/49)
7 Marketplaces	625->1	1250->1	1->100	3->1	5->1	1->200	1->1	3->1	6.25	(400/64)
8 Marketplaces	556->1	1111->1	1->112	2->1	4->1	1->225	1->1	2->1	4.93827...	(400/81)
9+ Marketplaces	500->1	1000->1	1->125	2->1	4->1	1->250	1->1	2->1	4	(400/100)

The operation is always at a loss: selling X amount of resource A for Y amount of resource B, and then doing the reverse operation of trading Y amount resource B back for Z amount of resource A, will always give final result of Z much lesser than the starting X. This roughly follows the following formula: 400 units will be traded back for (n+1)² units, where n is the amount of cities with marketplaces that you own, capped to 9.

You can also give resources to enemies or allies.