Ken, I think you hit the nail on the head... there are so many different factors that affect how each contractor will attach a price to their service.
... guys, just research pricing strategies and you will discover so many methods/techniques/studies that back up multiple models or base lines that work. But, in my opinion, it is how you apply your pricing strategy that really matters.
To be honest, and I'm sure many will share this sentiment, I couldn't really care less if there is an industry price list floating about. Let's face it, there is a lot more to our business than pricing alone - many who have commented on this thread have posted along the lines of their selling of an 'experience' and 'value-adding'. This shows a more developed understanding of their target markets, business model and application of pricing strategies - does an 'industry price list' really affect you in a big way?! It is this developed understanding that separates you from the guy who is just applying what he reads/hears from others/seen someone else doing - so many internal and external factors affecting our businesses that it is difficult to replicate what others are doing in terms of pricing, strategy, promotions, etc.
I know many are guarded about their USP's and strategy (and rightly so), but there are many 'newbies' who would benefit from a little direction - if this price list does this - GREAT!
HOWEVER...
As we all know, this price list cannot be comprehensive and truly reflective of pricing. In simple terms, what some of the guys up north get for their residential services, would be unheard of (99% of the time) in Florida... and likewise, a contractor charging 'pennies' for their service 'just to get work' will soon realize that their business model cannot be sustained. This is in line with what Ken is saying... 'Charge as much as you need to be profitable and grow your business'.
In conversations with guys in this industry and in other contracting industries, the concensus has always been that they charge what they need to charge.
If you need an overview of some pricing principles read all of this link:
PRICING STRATEGY
... EDUCATION NEVER STOPS!!