That can change over a few days, as the book is available from more places. Sometimes the ones at Christianbook are DRM-free, sometimes not. A few publishers are drm-free only in certain stores, kobo tends to be all.
Generally, though - I'd expect DRM on every title you download from any of the bigger ebookstores: amazon, B&N, sony, kobo, borders. Also from pretty much all the major publishers that sell direct and from places like Fictionwise (except their multi-format titles) and Books on Board.
You'll even get DRM on books at Kobo that were published via Smashwords (where there is no DRM).
If something is DRM free and I happen to know that, I do try to note it; but I consider that an exception for most Deals.