There is no standard pricing for anything. That's so dealer A can charge $110 for something that costs $12 and dealer B can charge $898 for the same $12 part. The prices charged at different parts of the country vary very widely. Compare the price of anything someone posts his local price of at his dealer with what your dealer wants for it. Mine is much higher than most, unfortunately. The extra 40% must pay for the free coffee and donuts in the luxury Mercedes lounge.Last question: I can't find anywhere where I can find a list of current accessories available through the dealer, with prices. Are these products older products, or what the Smart Center will offer as well?