EM tables have not gone up in price in recent years..
Solid State games are starting to get into this category as well, they just remain at a certain price point with little movement. ...
Alphanumerics are still going up and DMD pins are going as high as the sky...Once the pinball companies start incorporating the newest technologies especially LCD i dont think we will see the DMD titles doubling or tripling again. The DMDs will hold their own for a long time, but i highly doubt they will double and triple like they did in their latest run up to these levels.