£60 seems a lot
I reckon Nooj spent about 9 hours at our house for 3 bikes, so about 3 hours per bike and that obviously includes the cost of the equipmemt and materials (including the van and marquee).
Everything was done very thoroughly including the luggage and they'll be there in all weathers.
I don't think they charge too much for what they do.
Personally I thnk ithe cost can easily be justified economically if you ride in salt i.e. thru the winter, because otherwise your bike will depreciate.

Of course you can do it yourself if you choose or you can clean your bike after every ride if you want to although sometimes that will be in the dark.
I'd rather spend 9 hours doing something else - that's called choice :-)