What is the trading fee for IDEX?

Could you please elaborate on the trading fee structure for IDEX? I'm interested in understanding if there are any specific fees associated with making trades on the platform, such as Maker and taker fees, or if there are any other factors that influence the cost of trading. Additionally, are there any discounts or promotions available for high-volume traders or those who hold a certain amount of IDEX tokens? It would be greatly appreciated if you could provide a comprehensive breakdown of the trading fees for IDEX.