Bumblebees 2008 were going for $1000-1500.
I saw a female just a few days ago going for $400.
Super pastels have similarly dropped.. and lemon blasts??? Heck I saw them listed for over $1000 earler THIS YEAR, and now it seems that the going price is a steady $650 across the board.
How much were pieds going for in 2004? I remember they were going for well 1-2k not all that long ago, but hit up the latest clutches for sale on the classifieds nowadays and you'll find a pretty big price drop.
Lessers, pinstripes, and spiders are all great stories of incredible price drops. 2007-2008 lessers were an extremely hot ticket. Females were running over $700 pretty consistently if I remember correctly. Now everyone and their brother has one, and plenty are selling for $200-250.
I'd love to hit up BHB or someone else who deals with large numbers of sales to do actual statistics on price drops of particular morphs, but of course that kind of information is pretty well guarded.