So far the best deal seems to be Neuragena PN this week. Keep in mind the regular retail price is $29.99 but this week it is selling for $14.99. Then deduct the $10 coupon from Diabetes & You (also found in the smaller Spanish version) and that brings it down to just $4.99. Then use the $5 RRs generated from buying two Advils (which cost me basically nothing since I used the $10 Neuragena PN RR on them) and you get the Neuragena FREE PLUS $10 RR which you Ping-Pong back to the Advil again.
Keep in mind that there are two versions of this Neuragena PN. One is liquid and the other is gel. People in the know told me the gel is much better. Comes in a smaller box but the weight is actually more than the liquid version.