Dear all, what would be a not too expensive but qualitative real-time data provider that allows extensive intraday (tick level or similar) backfill of pricing data of EUREX and US derivatives exchanges? I mainly look for index options and futures and for time series of 5 to 10 years length (from today backwards). Currently I only have data access through Interactive Brokers. Does anybody know how long of a backfill they allow. Regards Steve