To do any transaction in EtherDelta now we have to higher the gas. Sometimes it is never executing that until we increase the gas to 50 gwei. This is around 5 USD. This is big cost for small transactions. Do you know any best practices we need to follow when doing deposit, withdraw and trades in EtherDelta (specially in these days)?
In reality, there's nothing you could do if you want to trade.
Lower gas == More waiting for transaction confirmation. I found this site for checking the right gas price
https://ethgasstation.info.
I don´t use etherdelta now due to the recent hack. I still have to recover my confidence. What I understand by trading is more than 5 movements a day or so and I think that ED is simply not fit for purpose. It is good just to place an order for some strange token that you can´t find somewhere else.