This is like Audioholics The Price is Right...
I don't know what the retail is for each item, but almost any dealer will give you 10% off retail, mine does more for me (including Denon products), and if you bought everything from the same place, I'd guess around 15% off, just a ball park idea.
What about paradigm dealers? I just got a little over 10% off when I bought my dad a paradigm system a few years ago since my main dealer doesn't carry paradigm. Need other guys to input since that's the only Paradigm I've bought.