Amazon.com has Sport-Brella Versa-Brella SPF 50+ Adjustable Umbrella w/ Universal Clamp (XL, Midnight Blue) on sale for $19.99. Shipping is free with Prime or on orders of $25 or more. Thanks digitoast
Note, this is temporarily out of stock, but can still be ordered.
Temporarily out of stock but can be ordered still.
This XL version rarely goes for less than $28-30, and hasn't been under $20 since summer 2018. . The target use is chairs and water activities (beach/boat), but these are amazing for strollers and wagons.