Buyers Groups - buy in bulk

You can find people in your area who are also interested in saving money.  These should be people you can shop with and trust.  Each person can find low prices in the area for various items.

You can also get bulk rates if you get enough people together.  I know people who collectively buy a side of beef each year and freeze it.  This works well with most products.  I do this with wine.  I'll buy an entire case (usually you can mix and match).  When you buy a case at my wine store they give you 10% off your whole purchase.  

Minimally you can get a Costco or Sam's Club membership.  They are inexpensive compared to the savings over a year.  If you have room to store them, buy large packages of things you will eventually use.