Ugh, that's unfortunate. It's just preying on users who are too unaware or too impatient to check what ingredients come from vendors. That's what a free market allows. The same could be said for people who spend actual Zen on things like XP boosts and pets, when they are a fraction of the value on the exchange. One hopes it all evens out, but caveat emptor.
Don't get me wrong, I get a kick out of driving the exchange once in a while. I had the starting price for Moba Fruit up to 100,000 EC once, but it didn't last long.
=/\= Transwarp 10.0 Victory Achieved on 26-July-2012, Six Months After F2P =/\=