Serious Eats - seriouseats.com

Sometimes you can find a good deal on your favorite spirit by checking listed sales at liquorliker.com. It might be worth a stop at a store that's a bit out of your way, if you've got several bottles to buy, and you're saving $5-6 on each bottle.

I had several nice crystal decanters for years, but never used them. Four years ago we moved and I set up a self service bar in the dining room. I used my decanters on a cart with a mirrored top. They look great! I got some very nice pewter nameplates to hang around them and I filled them up. I have bourbon, scotch, gin, vodka, rum and cognac. When company comes over I direct them to the bar. I also use a crystal ice bucket with silver tongs and a small crystal water pitcher. People make their own drinks in my heavy bottom crystal glasses and only ask me for whatever mix they need. I don't deceive them about the brands; if asked I answer.
Bourbon, Jim Beam Black; Scotch, Famous Grouse; Gin, Bombay Sapphire; Vodka, Sirmnoff Triple Filtered; Rum, Bacardi Select Dark; Cognac, Hennessey. I'm rarely asked about the brands and when I am it's usually to offer a positive comment. This approach allows me to purchase the larger containers which generally offer a better price per ounce. I figure I save at least $600 a year on liquor; more than enough to buy a few decanters if my friends hadn't given me any. By the way I drink all the brands on the rocks or with a splash except the rum. That's with coke or tonic.

@embolini9: "You can also just switch where you shop - like gas prices, liquor prices go up and down DRAMATICALLY depending on the location of the liquor store."
While this is generally a decent suggestion, some states have regulated liquor prices via the Liquor Control Commission (Dept of Labor & Economic Growth). Many readers do not have the luxury of simply "shopping around" for better prices. Good article.