Both Walmart and Kmart have 90ct Super Sticky notes on sale for $1. Use this $1/1 Super Sticky Notes printable to get them for FREE.
At Kmart the deal may be a bit better as there is a catalina promotion going on right now: Buy $15 in participating brands (Mead, Avery, 3M, Expo, Paper Mate, Liquid Paper and Sharpie) and get a $4 coupon off your next order at checkout. Buy $25 get a coupon for $8 off your next order. Promotion valid 7/11-8/14.
Thanks Money Saving Madness!