Most of these sales are 50-80% off. Like I said, January is a super sales month, these sites will get you started, but hunt your favorite stores in person or online and you're likely to find some fantastic deals. Once February hits though, they will probably dissapear.
See My Frugal Adventures post regarding Avon.com, she also recommends Avon ladies to help you out. You can receive free shipping with the code FSANY. See her post HERE
Kohl's.com There is also a Super Saturday sale for the first 100 Early Birds from 7am to 1pm in store and from 1am to 4am online. You can plan you list ahead of time online. Click HERE to check out the offers.