There seem to be many people that go to a flying school, all want the most experienced instructor, but for the same price!
Rushes - you make a very valid point and one that needs to be taken into account when the market research is conducted into Dennis's question!
As far as Advanced Courses go, I know of a PPL(H) holder who recently flew in the S300 with an ex military FI and after witnessing some of the more advanced maneouvres - Dennis knows what I mean! - not generally seen in the PPL(H) syllabus (or even at CPL(H) level probably) expressed the need for a course based on advanced flying techniques - he said he would pay for it! He did not, however, say how much he would pay for it - but if it needs an experienced instructor to teach it then the cost should be appropriate.
The Ferret