~The loss leader~
Out of tricks you posted, this is by far the most annyoing to me.
Especially when a retail store has a sale on something, and then doesn't have it when I get there.
It really makes ya feel like they just want to get you in the store.
Frys, the electronic store, is notorious for doing this....

The other tricks are pretty easy to catch onto.
I always round the .99 to a whole dollar above, so it dont seem cheaper.
And when it comes to bulk deals I make sure I'm getting what I absoultely need.

Thanks for sharing these tricks!
~Nico