[Bug] Difference in price between Deckbox and Tradelist cards

I was setting up a trade when I noticed this:

It appears that the price of the card is tied to my specific instance of it, and not the overall price that Deckbox has determined.
The same thing appears on the Mutavault card page.  Deckbox claims that it is one price for the card, but my Tradelist shows it at an entirely different price.  This is sad, because it could easily trick some people out of trade value if they aren't paying attention.

Edit: It isn't quite as I say, in that it isn't tied to my particular instance per se.  I removed the card from my Inventory entirely and re-added it, with the same result.  So, it appears that the prices are just generally pulled from two different places?  Caching issue of some sort?