Does make me laugh everyone who thinks a Vauxhall dealer is expensive for a service, seriously!?
Try similar at BMW, Audi ect. All much more, as Guffers quoted price for jag.
As for robbing power, these are 2ton luxo barges. Can't see an electric pump doing much 
Of course. Comparatively speaking Vx (and Renault for that matter) are going to be a lot cheaper than the likes of BMW and Audi for servicing. For example my friends boss got a promotion or a bonus or whatever, cant quite remember and treated herself to a 2 year old A Class Merc. She was horrified when, enquiring about a major service at the Mercedes dealer, she got a quote in the £700 mark!!! A service!!!! Just cos they can

My point though was more about what you get for your money. Renault being £159 for effectively just an oil change. Yes it's a lot cheaper than Guffer's £300 oil change. But both scenarios are daylight robbery imo.
The only downside for me is cos I did a good service, fixed the coilpack and check engine light removed and she was ecstatic now everyone wants their car doing at work

My answer being i'll do it if it's not French and I want paying!
