Lately I've been seeing "cels" and matching douga on Yahoo Japan from some series that I know are pure CG.
No, the cels aren't fancels or special promos for cards/games and such, they are, as far as I can tell, the regular douga type drawings. The drawings are probably scanned into photoshop with color added and then printed out (whether on acetate or a white piece of paper... no idea). The colorized image is shown as the auction image and prominently displayed above the douga, leading you to think it is a regular cel/sketch auction.
The thing is... the auctions don't use any special terms or explicitly say what is going on, just the usual "any distortion is from the cel bag, excellent condition!". Unless you knew the series had no cels, you would think "wow! what an awesome cel! Must buy! Must buy!"
Anyone else seen this kind of behavior?
(some examples of what I'm talking about would be some Galaxy Angel 'cels' posted recently from season Z (the second season). I just checked and none are currently listed. What might be what I'm talking about is:
http://page8.auctions.yahoo.co.jp/auction/h45766905 A Di Gi Charat Cel that was either trimmed to remove the registration holes or is a colorized version, and possibly a rilezu, but I doubt it. Usada in the auction title is the name of the character, but hey could be some code word too).