Can't say... I changed my plugs in 1 1/2 hours, all in, and had the serpent belt swapped in a half hour, start to finish.
At that rate, we'd be talking $150/hour.
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Six speed 2000 Boxster S
Arctic Silver on Metropol Blue | LN Dual Row IMSR | Arctic Silver console, spoiler frame & bumperettes | Crios mod | Technobrace | RoboTop module & modified convertible top relay for one-touch roof operation
The tubes only need replacing if the 2 x rubber O rings (located at the top and bottom of the tubes) are leaking. They can sometimes be difficult to remove and some have broken due to the plastic tube being brittle.