Ah, I see. Even if there is a small anti-spam payment, it requires the full transaction fee. Ok. FYI tho, 67 cents is still far too high for anti spam.
Well here’s the thing; Bitsquare does NOT need any anti-spam at the moment. No one is using it. How about we wait until spam is actually becoming a problem before crippling the system with spam prevention mechanisms?
Why don’t you allow a floating spam-fee that can be set to 0? That way arbiters can choose whether or not to accept your open trade, and if the network is too spammy, arbiters can require a small anti-spam-fee they take whether or not the trade goes through in addition to a larger fee they get only if the trade does go through. The likely scenario is that 0btc anti-spam-fees will be widely accepted for the larger success-fee.
This would allow people to freely list offers on bitsquare while the network is small without any risk. Once the network is large, anti-spam fees can be organically introduced in a market-driven way.