The formula I use to see the exact amount of fees paid is =Fees/(gross interest+ principal) currently my figure is 1.2025%; I believe that if a loan is funded then not taken up by the borrower then a fee is not charged on capital repayment.
Currently I have had approx. 20% of loans repaid early, from 450+ loans issued. I think early repayment will continue as I have read in the media that it is a function of P2P loans through either encouragement by the platform or a percentage of people always needing to top up.
I guess the only people not refinancing are the ones that have borrowed a large amount to begin with.