In metric: 1488.35 grams.
Smith's website is very slow, very buggy, and very badly designed but I use it because Smith's is cheap. And sometimes they screw up. This is their biggest fuckup that I found yet.
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Edit
To be clear - the price is supposed to be ~$9.99.
2 for 1 is usually just 50% off, but they hope you take 2 of them to clear inventory