Quote from walterjennings:
I trade a small amount of currency futures every month. maybe 5-20 a day. I am a bit wary about switching over to unbundled pricing but heard in almost all instances it will provide lower costs. Should I remain using bundled until I start consistently trading well over 300 contracts a month?
If you hold positions, you need to consider the carrying charge. If you short term trade, unbundled is often cheaper, but you should look at the details contract by contract. It was originally designed for traders doing large volumes in a few contracts where they are willing to work out the effective costs including exchnage and reg fees.