Found 3 exchanges where IDEX is traded for EUR. According to the data on 24 July the most optimal price to exchange IDEX for EUR is €0.0011 for 1 IDEX. This rate is fixed at Kraken at the maximum trading volume of the pair IDEX/EUR - 3.9 ths. EUR.
The maximum daily trading volume is observed in the IDEX/USD trading pair at Kraken and reaches € 47,298.76 (0.0067% of the exchange's total trading volumes) at the price € 0.0011 per 1 IDEX.
The minimum price to buy IDEX for EUR is 0.0011 - on the exchange CEX.IO.
The maximum price to buy IDEX/EUR is 0.0011 - on the exchange Kraken.