Edited March 1, 2021
at 10:03 AM
Costco has a promotion where you buy 10 clothing items, you get a $50 discount. This 4 pack of masks qualifies. However, if you add 10 masks to your cart, the total goes to $0, and you get an error when you try to checkout. So, if you buy 9 sets of masks, plus one filler item, you get it all for $4.99
I bought 9 sets of masks
4 Pack of Masks [costco.com]
and a men's belt that costs $9,97
Alternatively, you can order 10 sets of masks and this item [costco.com]
and the total will be $1. Personally, I think that is riskier because it appears to be part of "preconfigured order" I'd worry that they'd just cancel the whole order. Thanks to mrm16 for the suggestion.
Here's the breakdown
Discount on Order
Shipping & Handling
I wanted a filler item I actually could use, but if you find something less expensive please post it and I'll add it to the OP.