Rakuten.com, for instance, is listing the Amazon Echo Dot for $60.95 with free shipping included. Over at eBay, sellers are asking steep Buy It Now prices of $70 to $150 for the Echo Dot, and $280 to a crazy $1,000 for the taller Amazon Echo.
Video on the cost of concrete floors. Depending on the level of complexity, concrete floors can cost as little as $2 to $6 a square foot or be as expensive as $15 to $30 a square foot. Typically installers put down a series of products including waterproofing, metal lathe, a concrete overlay and then the final finishing and sealing coats. 2  These applications can add another $2 to $3 per square foot to the cost of the floor.
Polished Concrete Cost. Polished concrete pricing is basically dependent upon how many levels of grinding will be required to get the floor to a suitably smooth surface. The cost for polished concrete can go up from there depending upon any decorative effects that are applied such as staining or scoring, etc.his price is usually for commercial floors and includes staining or scoring the floors, according to John Buteyn of Colorado Hardscapes. $6-$12/ sq ft. The typical cost for polished concrete in a residential floor because it is more difficult to get a consistent look using a smaller machine, according to Buteyn.