Bestkee via Amazon offers Prime members the Bestkee LED Lighted Umbrella in Black for $24.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping adds $7.50.) That's $45 off list price and the best deal we could find. It's 32" long and requires three AAA batteries (not included).

Update: The price has increased for Black; however, it's also available in Blue for $25.99 $24.98 with free shipping via Prime.