Google Play offers downloads of MDScan: Mobile Doc Scanner for Android for 99 cents. That's tied with our mention from last fall and $5 under the best price we could find for this document scanning/PDF creation app.
Also available is CamScanner for Android for 99 cents. (Note that this is the full, licensed version of the app.) That's the lowest price we could find by $4, although we saw it for free in October.