Help w/ Zegna Purchased at Filene's

Need more help from the wiser and more experienced board members. I purchased a Navy Windowpane Ermenegildo Zegna suit today at Filene's Basement in DC. Price came to $650 after their suit sale discount (tag said the retail price was $1595). I'd like to figure which Zegna line this suit is and how much (if any) a bargain it really was. My understanding is that Zegna has several lines, some better than others. Also, I often wonder if FB inflates the retail price they list on their tags. The label on the inside of the jacket is dark blue and simply reads "Ermenegildo Zegna". There is another label in the chest pocket that has several codes that don't mean anything to me. Any help/suggestions would be appreciated. Thanks!

All-in-all the suit fits me well and I'm happy with it. Which is what counts, I guess. . .