Gold, Silver, HUI Emotion Case study

Rocket Science case study. You have a strange hobby - you are collecting plasma screens. So you are regular in your local store. You know their "normal" price. You have observed in the store that sometimes people are crazy buying the same plasmas for 40-75% mark up and thousands of them even waiting on the street and asking you to sell them if you have any. One day you will be stunned that plasmas are selling with discount at 50-75% and the same thousand people are trying to sell you some. What will be your actions in that market place? (Do not forget that you are crazy enough to have that hobby)