SAVE UP TO $50: Amazon has top-rated Soundcore sleep earbuds on sale for up to 28% off as of April 29. Get the Soundcore Sleep A20 for $129.99 (normally $179.99) or the Soundcore Sleep A30 Special with ANC for $179.99 (normally $199.99). $129.99 at Amazon $179.99 Save $50 $179.99 at Amazon $199.99 Save $20 Memorial Day weekend, aka the start of summer travel season, is almost here. If you struggle to sleep on planes, consider grabbing a pair of sleep earbuds ahead of your trip(s). Mashable's own Miller Kern considers her Soundcore Sleep A20s the best travel accessory she owns because they're more compact than noise-cancelling headphones, and because they double as regular Bluetooth earbuds for listening to music mid-flight. As of late April, the Soundcore Sleep A20s and the upgraded Soundcore Sleep A30 Specials are on sale on Amazon for up to 28% off. The A20s are marked down to just $129.99, which is a $50 savings and their lowest price since last summer.…