I have a very wide target range for the current pullback - normally I'd buy it right now, but with the market in consolidation mode, it could go as low as a dollar - all depends on how the consolidation/correction plays out.

Usually, I split my order into 3 pieces, but since I don't have a good feel for how far down it will go, I've split my order into 10 pieces - every 2 cents down I accumulate another 10% of my position. My broker doesn't charge me any more to do this, so when in doubt, I spread it out.