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Amazon’s price just dropped to $ 24.99 (usually $ 50+) on this 50-pack of Kimberly-Clark "duck-style" N95 masks:

Kimberly-Clark PROFESSIONAL N95 Pouch Respirator (53358), NIOSH-Approved, Made in U.S.A., Regular Size, 50 Respirators/Bag, White [amazon.com]

If you want an EXTREMELY LIGHTWEIGHT N95 mask and don’t mind looking like a duck, these are a nice option, especially at this price. I would not rate them higher than the 3M Aura masks, especially if you like to wear the same mask over and over again, but if you can’t stand the weight of a heavier mask like the 3M Aura, these are featherweight and do a decent job. They are similar to the Kimberly-Clark KLEENGUARD N95 masks.