I had a huge problem the one year I tried to do price adjusts on BF weekend. I ended up just buying everything on BF and returning the stuff I had bought previously. But I have never had a problem with Target running out of stuff in their ad, and if they do run out, they normally will do a raincheck - unless it says in the ad that it's "limited availablity" and if it has that then they normally don't put it out early anyway.