Amazon Prime Day typically brings great discounts on all sorts of electronics, but it’s a good idea to go for the expensive gear first. We consider robot vacuums to be in that category because, while there are solid affordable models available today,

As of July 3, the iRobot Roomba Plus 405 is on sale for $399.99. This deal saves you $400 on list price, and is the lowest-ever price according to camelcamelcamel. Our robot vacuum expert has hand-picked this deal as one of the best ahead of Prime Day.

Here are 13 early vacuum deals worth your while. We’ll be updating our list of early deals through Amazon Prime Day next week, and make sure to check back then — there are a ton of items we expect to go on sale,