Wouldn't be an advocate of doing things on the cheap generally, but if PTC are charging you-from Chillydog's calculations an extra £16,000..that is a huge sum of money.
Generally, flight training on the super cheap is not advised nor is paying through the nose for training. I think a school like PTC, in my opinion are being rather cheeky charging such extortionate prices, especially with what they are offering. And to charge people for this "assessment"-i think it is a money making racket. Anyone who is foolish enough to do it, has more money than sense.
Again, with any school-
talk to very recent pupils and make sure they give good instruction.
You don't want flight training on the mega cheap nor too expensive..just reasonable.