Find out why one food writer stocks up on these budget-friendly finds nearly every time she visits the warehouse store.

Every couple of years, with rising costs of living, the income required to fall into one "class" or another varies. Currently, those whose income qualifies as the upper middle class, tend to

Kirkland Signature is Costco's value brand. These products are often cheap dupes of name-brand items at the wholesale retailer, grocery stores in Canada and discount stores. Shopping the value brand can help you save money.

Part of the fun of shopping at Costco is trying to figure out who actually produces many of their Kirkland Signature products, like this butter.