Yea, tease advertising can be terrible. How long did we hear about Gatorbacks? It turned so many people off that it took 30 min to sell out instead of 15. Poor David Blaine 
In the case of David Blaine, he could package a box of garbage he used during a performance and people will buy it by the metric ton. People buy his decks in part because they're the same decks he uses when he's out and about or filming a TV special.
Remember the initial reception of the Theory11 Monarchs? For weeks, they were being pushed as the greatest deck since paper was invented - the hype and tease reached epic proportions. When they came out and turned out to be a) different than advertised and b) decent but rather mundane, the product damn near flopped.
T11 was smart to stick with it and it became a staple deck in their lineup, but you may have noticed they haven't done a big tease campaign for anything since. Closest they did was a few photos of a deck in the shadows about two weeks before the release - and that was it, period. That was for the rare White Monarchs.
Make a teaser campaign run too long and people will eventually lose interest. A modern buyer these days has seen the tactic used dozens if not hundreds of times; it just doesn't hold the same attention as it did when the tactic was new. The best tactics, in advertising as well as warfare, are the ones that the target never sees coming, the ones that leave them completely surprised and off-balance.
