There's a lot of confusion about connection fees with different data feed providers with different fee structures. Here's a run down of any additional fees you may incur connecting Jigsaw and Journalytix to your trading data feed.
Keeping Your Data Fees Low
CQG Continuum - Charges $10 per connection. 1 Connection can only connect to 1 platform simultaneously. Each login also incurs data fees.
GAIN Capital - No additional fees to connect to Journalytix at the same time as the GAIN platform.
MetaTrader 5 - No additional fees.
NinjaTrader 8 - There is some confusion here. NinjaTrader is a brokerage that supports CQG Feed and NinjaTrader 8 is their platform. You can connect to either the feed OR the platform. If you connect via their data feed, you will pay the additional $10 fee mentioned in CQG Continuum above, they will also charge you 10c per trade. If you connect to the NinjaTrader 8 via the bridge, these fees do not apply.
Rithmic - Charges a flat $20 fee regardless of the number of platforms you connect to. They also charge 25c per trade. Note that this is a minimum fee, if your Rithmic trading fees for the month exceed $20, then you don't pay any connection fee. This is a change for 2019. See this write up from AMP Futures on Rithmic connectivity.
Tradovate & TST Trader - Connecting via the new bridge to Tradovate/TST Trader has no additional fee.