I suspect that my IP's fees were reduced as well when looking at the modifications. I know that my nominee fee (think that's right!) was £1,500+VAT and the TIX modifications said that it was a maximum of 5 months contribution (5*£270=£1,350). If the 15% also applies (not sure, didn't see that) then my IP will be working for 15% of £16,500 = £2,475, plus the £1,350 mentioned above = £3,825 plus any other charges that are made. BUT my IP, and I suspect all other IPs, work very hard for their money.
But I agree, the fees aren't important, because although technically you are paying them, you aren't if you see what I mean. I would rather be paying more to a firm who I can wholeheartidly trust than less to one I wasn't sure about.