The Warlords have shot up in price in recent times too, over £900!!! Mind you thats because the exchange rate between the UK pound and US dollar is so poor at the moment, but never the less from the point of view of somebody like me who is an owner already its good news that they have actually increased in value since I bought mine
I think Dragons hold onto their prices simply because not only are they rare but design wise they so desireable as well, seems everybody wants them and once you have a pair and see the reaction you get its easy to understand why.