This is like people going out and buying jeans and hats that are already beat the hell up - rips, tears, and bleach stains on them to make them look worn in. Yet they just paid $60 for a pair of pants that will certainly deteriate faster then a new pair of pants without holes in them.
Sure, that vintage, classic look is cool - but its not just the look of it that makes it nice. Its the true history that it has experienced that, I think, makes it REALLY cool. Without the history or the natural aging of these products, its just old LOOKING and not really anything special.
But, I guess if people by torn up jeans, why shouldn't they buy old looking signs...and I guess pay out the nose for them at that.