The Mammotion Luba 3 robot lawn mower is over $500 off at Amazon — act fast to score a free garage (opens in new tab)

Time to get the yard ready for summer. SAVE OVER $500: As of May 14, the Mammotion Luba 3 is on sale for $2,099 at Amazon. That's a 20% discount on list price. Opens in a new window Credit: Mammotion Mammotion Luba 3 $2,099 at Amazon $2,608 Save $509 Get Deal With longer summer days on the way, it's time …