I'm considering Interactive Brokers because of the IBrokers package for R.
On this site there is a small section on data availability and I'm having a hard time understanding the table.
Lets say I have 10,000 dollars in my account and I want 15 minutes bars. Does it mean I can get few thousand observations (one year of 15 minutes bars).
I'm only concerned about the S&P 500 index.
I'm mainly concerned with the amount of observation since I'm building a statistical model and I want to use e.g. 15 minutes bars or even 5 minutes bars.