That is ridiculously overpriced, you'll be lucky to get 10Ke out of it. It's not even that good of a trinket either and is highly outclassed by others, it's prices crashed shortly after it's release.
Not trying to be negative to note, i would suggest maybe trying in the 5-10Ke range. If you do manage to at 20Ke, gratz, but it feels like a scam going that high as it is.