You wouldn't believe what this one retails for and what I paid for it. Just remember I wrote the website and bought the domain for my 'supplier'.
And his brother is my landlord.
There are TWO GRADES of these. The ones you buy online are grade B. They're made at the same time, but don't pass the highest, most stringent audio quality testing.
Grade A units are distributed through the audio retail networks. Your local shops. Where professional install is likely to happen. The price difference between the two grades can vary as much as 50%. If you buy from an online retailer, odds are very hight that you buy grade B, but would never really know it. Mine is grade A certified.
My 'source' is not only a retailer, but also a DISTRIBUTOR to other retailers in the 'distant' surrounding areas that do not directly compete with him.