Hi everyone, I'm developing an automated trading system and I'm also hitting a problem named Non-display fees. I'm looking for an API to connect my system to but in some cases I'm being asked to pay absurd fees just because I want to access the market in a 'Non-display fashion'. Lightspeed trader c++ api, 6000$/month to access NYSE Hold brothers, Sterling Trader, API access is denied since 2009. I've seen others in this forum as well. Someone said that NYSE is auditing platform vendors that offer API access to increase their fees. Is this really going to get this ugly? I've recently subscribed to IQFeed, is it also going to get hit? What about IB TWS API?