Costco sells some surprisingly good stuff for (relatively) little money. When you buy jewelry from them, for instance, they include a gemological certificate certifying the value of the gems. This gives you an idea of what a regular retail dealer would charge for the item you just bought. As an example of the savings available, a couple of years ago I bought Karla a nice necklace for her birthday. The Costco price: $xxx.99. The gemologist’s estimated price at retail? $XXX.99!!
Update: I forgot to mention—these prices include shipping!