The "renewal" product is an excellent line of windows. But, Andersen controls every aspect of it's sales and installation procedures. They will give the renewal line to a financially sound dealer that agrees to or already has a large showroom, has a separate, supervised, installation department, a supervised sales force, a marketing department etc.
In return, they get the "franchise" on the product line exclusively, for their geographical area. Here in IN, it's the entire state. But, for the "privilege" of selling the renewal product exclusively, you must spend a certain amount of $$$ in advertising the renewal line, all installers must be certified, all sales force must go through approved training and on and on.... It's gotten so bad, that the local renewal dealer for YEARS (really, since the product's inception), just kicked them to the curb last year because Andersen wanted them to stop using their company name and VERY well known jingle, in Andersen Renewal ads. Now, I'm sure there was more to it than that, but that was the major reason I heard.
Marvin Infinity operates much the same way. Not all Marvin mind you (just like not all Andersen products are brought to market this way), but the Infinity line, is brought to market much like the Renewal by Andersen. Big dealers, big showrooms, big advertising budgets, huge profits and insanely high prices. Nice business model, if you can make it work.