Maybe your grandmother gave them to you or you scooped them up at a garage sale. However the typically bright Pyrex dishes with intricate designs made their way to your kitchen cabinets, you might want to think twice before donating them.
Some Pyrex dishes have sold for as much as $1,800 online. There's even a vintage Pyrex mug that's for sale for $700 and single bowl that has been "reduced" to $900.
The brand has been beloved for years because of its longevity, which is why when you accidentally leave it at your sister's house you can get it back years later, still in top shape.
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