Escodex reduced their trading fee for BTC2 to 0%, so now there's only the bitshares DEX platform order fee of 0.02526 BTS/order. Making it cheaper than at Crex24 to trade there.
I'm not sure what they reduced, they charged me for the sale and even for the cancellation of the order. And the commission is really high.
You would need to buy BTS first from here:
https://wallet.escodex.com/market/BTS_ESCODEX.BTC in order to get those low BTS-denominated fees. If you don't get BTS first, the fees are higher.