I know there was a reason, or I thought there was, but I don't remember. XD Anyone else know?
Not sure but they bought off me this morning
They buy items that are priced too low to keep the market up so everything isn't worth only a small amount of sP.

Usually it is because the staff feels that certain items may be underpriced or overdeflated. I think it may have had to do with a lot of the elixirs they bought up being very cheap for their given rarities.
My Battling Tumblr
Buying discounted Kumos items and intelligence boosters.
Comment/sMail me if selling.
I'm curious about that as well. They bought things off of me earlier today, and I was wondering why.
They purchase deflated items to keep the economy stable, asaik.