im pretty sure for small transactions of 0.01hive/steem ur making a loss, while the spread is too high for me to make a profit from ur swap transactions.....
https://hiveblocks.com/tx/9bf29af7768a6860fb2bace6640ddf7fa99e555a
https://hiveblocks.com/tx/188cda42a82be3c83899dd00ac3be9791de9cd4c
https://hiveblocks.com/tx/af9c71cb457741d36b276ea4bd33e645a5b3b0e0

at least for smaller spread i would be able to build a bot to exploit the loss you make and profit. but i could always lower the spread manually by placing trade orders on the steem engine making the swapbot trade with me while i profit...