N53 piezo injectors

[Theo.e93.n53]

As we all know the problem of injectors persists around , bmw Edinburgh quoted me 608£ a piece including vat and 4200£ for all 6 to be replaced including coding . Is there any other way? I found x6 index 11 on eBay for 1000£ all in down of an 330i that was mapped stage 2 and scarab in end cuz of an accident ,order them they will be here tomorrow and will test them before I put them in the car ,
what your story with useless parts ?