SAVE OVER $300: As of May 14, the Eufy C28 robot vacuum and mop is on sale for $499.98 at Amazon, marking a return to its lowest-ever price at Amazon. $499.98 at Amazon $799.99 Save $300.01 If you've been hoping to pick up a combo robot vacuum and mop to help clean up your home ahead of summer, you don't have to drop a ton of cash on a top model. There are plenty of great budget options available. The Eufy C28 robot vacuum and mop is one of our favorite budget picks , and now is a great time to buy it as it's currently on sale at Amazon . As of May 14, Amazon has dropped the price of the Eufy C28 from $799.99 to $499.98. This marks a return to its lowest-ever price at Amazon, so what better time to take advantage of this offer? We consider it the best budget roller mop robot vacuum , so it's well worth picking up at this low price. Mashable Deals By signing up, you agree to receive recurring automated SMS marketing messages from Mashable Deals at the number provided. Msg and data rates may apply.…