For BUND (FGBL) trading the fee structure looks interesting (because of low exchange fees). And for BUND you will need to do a few RTs per day anyway to generate a decent income.Quote from pretzel:
Did a quick calculation -
For ES, at least 19 RT's per day or 380 RT's per month to be cheaper than IB.
For ESTX50, at least 16 RT's per day or 320 RT's per month to be cheaper than IB.