Is that the only difference from the 25th anniversary one to the stock one is the "plate"? It doesn't really matter if not but you really don't have a 25th anniversary Charge now, do you? Isn't it just a Charge with a the added plate or am I missing something? Sorry if I am!
I have no idea on pricing but I have purchased new Charge AL's for about $65 and a new without box Charge Ti for less than $100 so I guess I would say somewhere in between but just a guess!