What is the average dealer mark up?

Hmm. In all candor it’s our system at work when larger businesses push out smaller businesses primarily due to economies of scale. Take Walmart as an example. I don’t like the fact that they often crush their smaller competitors but how can it not be so in a free economy like ours? 
Who benefits from the lower prices?
The other thing that irritates me is the rabid criticism of larger corporations started big time by our last president. Are corporations not a conglomeration of many individuals working together to deliver a widget to the marketplace? When govt seeks to punish or destroy corporations who suffers the most? What exactly are laid off employees supposed to do? Work for the govt is the solution of certain factions in our society and that’s not good.
An enormous problem we’re facing now and will be more so in the future is our overall taxation. Income tax is just a part of our overall tax burden. This directly impacts the pressure put on households. Unfortunately it’s the American household that lets our govt pilfer OUR tax dollars away. Obviously this is just my opinion but I believe that it has merit. My true apologies for being so verbose. 

To me, that's why it's important to find a dealer that you like and trust.  That way, you find his/her service and insight valuable and show you appreciation by buying from him or her.

To me, the greed portion or this business has always been in the distributors (in instances where they control pricing in countries they serve).  A real example.  Pair of speakers X goes for $6,850 at U.S. dealers.  Same set of speakers goes for $6,790 in Canada or $4,864 in US$$.  The Canadian price is in line with the price in their country of origin.  So why am I paying a 40% mark up for the right to buy in the US?  

In this instance, I feel bad for the dealer as he/she has no control over the pricing.  To me, that's what's out of whack--and it's very rarely the mom and pop shop that you have grown to trust who is "making bank".

@badgerms4
Have you ever imported a product into the U.S. from another country for the purpose of resale? No, I didn't think so. Please review this: USITC Harmonized Tariff Information. Some import tariffs that importers (distributors) have to pay for electronics are over 25%.

And how much product have you purchased and warehouse, in expectation of future sales to *audiophiles*? I don't know about you, but in my business there is a cost of capital. That changes year to year but it's something. And then you have to warehouse and insure the gear you are importing. If you can figure out how to do it for less please let my favorite audio distributors know how.

The same btw is true of most things, including cars. Which is why car dealerships are so incredibly profitable. Another shocker, the markup
at wholesale is about the same. Double. Or more

As others have noted that is completely false.

Well, you think wrong.