I'm in love with the Costco! I got it for the low low!
Whatever your future purchase is, check to see if Costco sells it first.
The Chandler costco is one of the bigger costcos so come here first if it's close to you.
I don't like that it's cash/debt/amex only but that will change in 2016.
Food wise you can't beat the hot dog soda combo for $1.50 (same price for decades), but pizza is good value too. The brisket and chicken sandwiches are pricier but very delicious.
Specifically for liquor, total wine is actually a better deal. However kirkland brand liquors are almost always a good buy.