Does anyone here use PeoplePerHour, have you had any success with it?
I think you have the wrong idea about PPH or any other sites like it if you are proposing a £10K fee for anything, whether it is the bare minimum to cover their requirements and your time or not. They wouldn't pay you anywhere near £10K if you could genetically create a magic bean to grow them a money tree.
You are lucky you even got a response at all. PPH is not for professionals. PPH may be good for other industry sectors but it certainly is not for us.
People who use PPH are looking for more than a bargain i.e. what they want done for the extreme minimum cost. Cheap is too expensive.
It is a waste of time looking for work on there. PPH is only good if you want to hire someone for certain jobs, not if you want to get hired.
Even I sweated doing it for cheap, the person it would go to would not value it anyway and he would get no value from it.