The charges in ERSA relate to LANDING fees charged by airport owners/operators.
AsA levy en-route/approach charges. This is their bread and butter, and incidentally why they are pushing the LAMP proposal as they do not wish to provide a service which they cannot charge for as they are a GBE.
Charges are usually calculated on MTOW of the aircraft in question.
Your question as to avoiding doing an ILS is curious, as the decision as to whether one is required is based on prevailling weather conditions.