Remember, it doesn't matter how much you save on an item if you are constantly spending! You will save more if you just don't shop at all than if you buy, buy, buy even if what you buy is a good deal.
That is unless you learn how to make money buying stuff. This is what I do for a "hobby". Today I made over $20 buying stuff at two of the major drug chains. I will get an additional $13 by submitting some of the receipts for a manufacturer's rebate. I will even "make" some additional dough by donating some of the items to the local food pantry for a tax deduction.
Other than shopping "for a profit", I pretty much hate to shop and even then sometimes I don't really enjoy it; but it is a great way to get the things that we need/use for free or pennies on the dollar.