So here is the thing about these filters. Yes, you can find cheaper ones if you’re willing to get the generic brands. But what they don’t tell you, and I think Woot is missing a golden opportunity here, is that Samsung is one of the very few filter-makers whose filters are NSF 42 AND NSF 53 certified!
NSF 42 certification is the one everyone has. That means that the filter reduces most (up to 97%) of the chlorine and tastes/odors in the water. OK, that’s nice.
NSF 53 certification is the one that really matters in my opinion. That one is the one that reduces 99% of lead, VOCs, cysts (like Cryptosporidium and Giardia), and asbestos.
Here are a couple of links to pages explaining all of that.
Long story short, these filters are worth the extra expense, and at this price, they’re a steal!