Shopping at a warehouse club, such as Sam's or Costco, is a wonderful way to save money. These bulk-goods stores offer low per-unit prices on many things they sell. Don't be afraid to stock up on the best bargains at warehouse clubs including batteries, meats and other items.

It is very easy to make costly mistakes when shopping at warehouse clubs. Perhaps the biggest mistake: Assuming the warehouse club price is the best price on every item. That's not the case. Another big blunder made by club shoppers is buying things they don't need simply because the price is "too good to pass up." Spending that is not necessary can deal a blow to your budget.

It is not wise to make bulk purchases of perishable items at warehouse clubs, no matter how tempting the price, if there aren't enough people in your household to consume quickly. Throwing away ruined food is the same as throwing money in the trash. Furthermore, you should always shop with a list to avoid impulse purchases, which can be whoppers at warehouse clubs.