Buy "X" get one free

You've all seen it in the store.  Buy 3 Pillsbury rolls and get one free, buy 2 sodas get one free, etc.  This isn't always a good deal.  Sometimes things need research before just jumping in and buying.  And I wouldn't learned this lesson if it weren't for Wal-mart.

I love the Sobe Water.  They have all kinds of different flavors, it's light and not too sweet.  I picked up a couple at Wal-mart because they were $1 each.  Not to shabby.  I went to Safe-way and they were having a "buy 3 get one free" deal.  Surely this is the better deal.  Not at all.  One at Safe-way costs $1.54.  So you're getting four for $4.62.  That's 62 cents more than Wal-mart.  So short and simple don't be deceived by these kinds of deals.  If worse comes to worse and you needed 3 of whatever anyway, you may as well take the fourth one.