What an excellent little book !
The Author has spent 50yrs in the trade and was trained by his father who was also a french polisher, so you are getting about a hundred years of combined knowledge.
It is well laid out explaining the processes in a clear chronological workmen like manner .
If you truly want to put in the effort and follow the detailed and simply explained methods, you too can be a french polisher.
He even gives some tips that he has learned after years of practise, surely it is worth the £[] for that alone .