My Experience: He was very helpful even though I was the jerk on the cell-phone when he walked up.  He stayed polite and insured I got the right water-filter for my fridge.

Total Score from a possible of 10:  10

Interaction Cost: $40

Said “Hello” first:  1 Out of 1 point

Smiled:  3 Out of 3 points

Efficient:  2 Out of 2 points

Friendly, Engaged or Enthusiastic:  2 Out of 2 points

Said “Thank You”:  1 Out of 1 point

Bonus for getting all of the above:  1 Out of 1 point

If you have been here please leave a comment about your experience!