We've lowered the market fee BlockTrades charges for TRADE.BTC-related market orders from 0.2% to 0.1% in response to requests from some witnesses who believe it will encourage adoption of the decentralized exchange. This means that the rate for TRADE.BTC to BTS and other BitAssets is now approximately 1/2 that of most centralized exchanges that we're aware of.
Yeah but what is the fee from btc to trade.btc and what is the spread between trade.btc and bitbtc or bts. Reducing the fee doesn't do much to make BTS a viable alternative to other exchanges where you don't incur those transaction cost.
The fee from btc to trade.btc is 0.05% + 4BTS to pay the transaction fee to send the TRADE.BTC. Same fee for trade.btc to btc, except transaction fee is the bitcoin transaction fee, of course. The centralized exchanges I know charge some kind of fee like this, although sometimes it's just some fixed fee (when it's just a fixed fee, it's always been higher than the transaction fee though).
Overall, the fees in total are less than the marketing rate fees charged by the centralized exchanges I've used.