As you will see from my recent post "Frozen ATPL - the real cost" the cost from zero to 300hr Frozen ATPL with MCC in the UK was just under £40,000.
I had a PPL-Multi and 240 hrs at the start, so no hour building was required, but other than that it is likely to be similar for everyone else.
Having a PPL and MEP with 240 hours doesn't exactly consititute zero to 300 hour frozen ATPL does it? Working by that you paid 40k for 75 hours flying! For a realistic comparison you should include how much the PPL, MEP and hour building cost you (though to be pedantic you had more hours than the minimum required to continue on with the CPL).
You can only compare costs if you compare the same course i.e. ZERO (nothing, nada, no hours, zip) to CPL/IR with MCC including accomodation, fees, food etc etc. There's lies, damn lies, and then there's statistics!!!!