Hi,
If you are doing the work yourself you will be able complete it for under £100. Bearing in mind what you said – “Loud for many months”, – you will need the following components to make the repair – bearing and seal set, tub centre seal, and drum support.
If you have the work done professionally, most engineers will charge for 2 hours work – it is a TOTAL demolition job! Establish hourly rate 1st.
If you put up your postcode, a UKW engineer in your area may be able advise frurther.
Regards,
Penguin45.