4-pack on their website for $25.99 + $3.99 s/h: https://www.costco.com/Feit-Elect…84764.h
They also have the 2-pack for $19.99 – $7.00 instant savings = $12.99 in-stores (Item 1145395).
UL listed and 3.4A charging.
P good deal considering Best Buy had a 2.4A, 2-pack on sale for $15 and it was a frontpage deal.