We Need More Writers!
Not too long ago there were a slew of white dyes being sold on the gem store, which in turn caused a temporary glut of White Dyes on the gold side of the Trading Post. As soon as the white dyes disappeared from the gem store, prices went right back up for one of the most popular dyes in the game. If ArenaNet ever decides to have another weekend sale where dyes or other popular items go on sale, please please please make an effort to buy those items on the trading post.
This GW2Spidy White Dye Graph says it all:
If you bought at 10 when the dye hit its lowest point and sold back at 15, you'd be making 2.75 gold per dye! As an investor, that's a 27.5% return on investment! Not bad for two days of work ;)
For forum members, I just discovered an insane bug for dodging fees. It was emailed to me by a clever soul who has been doing it for many months. This comes in especially handy when you have items to sell from salvaging, looting, or opening containers. It would even work for the white dyes! You would make a lot more than 2.75 gold per dye using this secret.