ANCO 31-Series 31 wiper blades (select sizes 18”, 19”, 21”) for $2.51 per blade. Free shipping with Amazon prime

Amazon has select sizes of ANCO 31-Series 31 wiper blades for $2.51 per blade. Free shipping with Amazon prime. Sold and shipped by Amazon.
I missed the deal on the Bosch wiper blades, but while browsing, I came across these. It seems the regular price is around eight bucks, and seems comparable in quality to the Bosch blades in the other deal, but I do not know from experience. They have some other sizes for this price also, but for "add-on" only. I got lucky that the sizes they had available fit my Honda Civic.
18" https://www.amazon.com/gp/product…=UTF8&th=1
19" https://www.amazon.com/gp/product…=UTF8&th=1
21" https://www.amazon.com/gp/product…=UTF8&th=1