Greetings!
Fixed fees are a smart option for Waves smart contracts. No exploit potential but Im concerned about WAVES price?
The commission for creating one buy or sell order on the DEX platform is 0.003 Waves.
Transferring of any tokens from your wallet will cost you 0.001 Waves.
If you have enough assets (BTC/ETH/LTC/ZEC/USD/EUR and so on) and if these assets have sufficient value, just exchange them for Waves without having initial Waves using the internal DEX exchange.
For more information please follow the instruction -
https://support.wavesplatform.com/en/knowledge-bases/2/articles/16361-beta-wallet-how-to-trade-tokens-on-the-dexKind regards,
Waves Community manager.