I keep hearing 'trade-in program'... how does that work? Do they give you a certain percentage of the original price of your speakers when you purchased them? Or is it a certain percentage off of any new (upgraded) speaker you purchase when you give them your old speaks back?

Not that I would need that program anytime soon as I am just about to purchase my very first set of Axioms. But if I were to get the EP600 let's say & 6 months from now I decided I would like to try the EP800 instead, how would the upgrade program work for me?

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD