...Back to the topic of AA; I think 40€ can be justified if the singelplayer is mindblowingly awesome and it included multiplayer but it doesn't. If a new player buys AA im sure they will assume they can play multiplayer with this expensive "standalone" product but they can't, they probably gonna be pissed off and not buy more coh2 products. They are not gonna get much new players into coh2 with this.
well, that is probably the feelings for you and the minority of coh2 community here who are interested primarily or only in multiplayer.
whether AA's $40 price is justifiable depends on individuals and frankly to me, who like campaigns, $40 seems to be justifiable.