We found this at ten stores including Wayfair, Walmart, and Lowe's. This product sells from $254 up to $284.95. Users can save 10% by shopping at Houzz.

This is the lowest price we've seen, typically ranging from $319 to $449.

This product is also marketed as the 

Karran Quartz 32-1/4'' X 19-1/4'' Large Single Bowl Undermount Kitchen Sink at Wayfair

,

Karran QU-812 Undermount 32.5 in. Large Single Bowl Quartz Kitchen Sink in Concrete at Walmart

,

Karran Undermount 32.25-in x 19.25-in Quartz Single bowl Kitchen Sink at Lowe's

,

QU- 812 Quartz/Granite 32.5 in. Large Single Bowl Undermount Kitchen Sink in Concrete at Home Depot

,

Karran QU-812 Undermount 32.5 in. Large Single Bowl Quartz Kitchen Sink in Concrete at Amazon

.