Good news for your wallet: not every kitchen tool is worth a premium price. The bad news? Some wares most definitely are. Here’s why, along with recs.
Dutch Oven

Le Creuset 5.5-Quart ($319)
Why: A good barometer to consider the value of a high cost item is its potential longevity — will you be using this thing 10, even 25 years? Premium Dutch ovens are not cheap, and they are probably marked up beyond what is a totally fair price. But the best will last you decades.
In general, what separates the more frugal options (like Lodge, Cuisinart and Cuisinox) from the premium category is the enameling. The way in which it’s applied, in how many layers and the quality of the porcelain all matter. When done right, this enameling will survive the odd encounter with a metal spatula (please, use plastic or silicone), rapid cooling (this can cause “crazing,” or cracks in the enamel) and anything else you might throw at it.
Unfortunately, you’ll be hard pressed to find information on enameling methods, quality control standards and whatnot from the brands themselves, but from our testing three brands stand out (including one you’ve likely not heard of).