This entry-level robot vacuum left some of my expensive ones in the dust and it's on sale for $150
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Source: This entry-level robot vacuum left some of my expensive ones in the dust and it's on sale for $150 (http://ht**://www.zdnet.c**/article/this-entry-level-robot-vacuum-left-some-of-my-expensive-ones-in-the-dust-and-its-on-sale-for-150/)