Those amounts seem pretty bloody high, What type were you flying?
As for training apoproach costs its really an open ended agreement between yourself and your training organisation.
If you enter an airports ATZ you open yourself up to getting charged and I have in the past refused a vector and height not above because the feckers were trying to get me into the ATZ to charge me. They got told that I was VFR in Class G so negative.
Some airports these days are fly twats so know your airlaw. If they try and control you to seperate you from IFR traffic in airspace that they ain't allowed to tell them to sod off!!!
MJ