I think you have been burying your head in the sand
I have just followed a link showing a holiday cabin for £289 for a week ,,now get £50 discount,,,,umm sounds good,
press the book now,,,follow the other add ons,,do you want £9.00 insurance,,===no
then bottom line PLUS £27.00 standard booking fee
surprised ==yes,,,,then thinking,,====NO,,,it is normal for these bottom line add ons,,we are just slow to remember them.
But £27.00 booking fee,,,,on their own site ,,,it would sure be nice to see this all added in the advertised price,,but you know,thats how its done.