Individual ticket prices are now available to view on the NXEC and NRES journey planners (haven't tried The Trainline or Raileasy yet).
For example, a CDR from LTN to STP (which I often buy) will go up by about 9% to £7.90. Historically though I was among the luckiest because that same ticket cost £7.40 in 2006, £7.25 in 2007, £6.60 until September 2008 and £7.25 today. In that context, an overall rise of 6.75% over 3 years is fine but the 9% rise in itself is definitely not (in light of the recession).
For the same flow, the SDR will rise by 2.5% to £20.50.
For BDM to STP, the CDR fare increase is even worse - a 12.5% increase to £18! The SDR will rise by approx 3% to £34.
And some of you may remember yours truly
elaborating on better deals for Ashford passengers buying tickets to St Albans instead of London - well the CDR for that flow will jump by a third to £20! The difference between that and the equivalent fare to London will decrease to 80p as a result (the former is still cheaper); and the SDR to SAC will go up by more than 10% to £25.90 which is still £14.70 less than the equivalent fare to London.
Oh, and the CDR to Luton will rise by 15% to £15.20. I'd be interested to know if FCC still sets those fares or not.