I don't know the price ranges for these items as I've just been occasionally looking at the forums and in game MB.
I definitely want to buy a wicked whisker and I'm looking for the price ranges on the frenzy, thunderous, and rageous plate mails.

https://wiki.spiralknights.com/Thunderous_Plate_Mail#Thunderous_Plate_Mail
https://wiki.spiralknights.com/Wicked_Whisker

Links are to show exactly what I'm looking for.