Run to Walgreens

But only if you plan to potty train and need pull-ups! Seriously, even if you aren't doing it for a while, go stock up!
They have Pampers Feel n' Learns size 3T-4T on clearance for both boys and girls. Some stores have them for 50% off at $5.59. Other stores have them for 75% off at $2.29. There are coupons out for 3, 2, 1.50, and 1.00 off pampers, so if you have any that makes these diapers even cheaper.
One word of advice, even if they are not marked at your store take a package of the exact kind mentioned above up to the register and ask them to check the price.
I'm going out today to check our local Walgreen's. I did see them clearance at 5.59 at one Walgreen's about 45 minutes away when I stopped in last weekend.

UPDATE: I found them for 2.89 a pack. With the 2.00 and 1.50 off coupons I had that made for some really cheap diapers!
Other clearance items to look for that probably aren't even marked if they are still in your store. I have found only a few of these items in this area.
Gerber Grins and Giggles wash in Lavender and Sweet Pea scent. 1.09
Baby Magic Lavender Milk Bath and Baby Blossom's scent. 1.09
Johnson's Disposable Washcloths, original scent. 1.09
Johnson's Lavendar massage gel (older packaging) 1.29
Spray n' Wash Dual Power. 1.09
All Small and Mighty 'Free and Clear'. 1.??
Luvs Mega pack diapers size 4 and 5. 3.89

Just thought I would pass along these crazy deals!