I would have to edit names out a screen shot I just took to post it, but it shows a materia going from 4K, 3.2K, 3.5K, 3.5K to 2.4K to 1K and now available for 80 gil..... the history goes back to 2/1. Buying out the low cost isn't worth it at this point due to the sheer number available all the sudden.

This is the same story across a lot of materia (along with many other items) over these last few days/week for whatever reason. Something needs to be done to how the markets are tracked. Instead of having the vendor sell price put as the asking price, they need to put the average over the last 7 days as the asking price. I believe this would stabilize pricing much more effectively then basically everything starting at 1 and 2 gil.