How much does this cost to the nearest dollar?

Sweetnight King Size Mattress, 12 Inch Gel Memory Foam Mattress with Three Firmness Levels, Curve-Designed Foam Design for Neutral Spine Support, Flippable King Mattress in a Box
FLIPPABLE MATTRESS FOR ALL SLEEPERS - Sweetnight king size mattresses are combined with three firmness levels. The top side offers soft and medium-firm feeling but still supportive. The bottom side is firm feeling which is perfect for back support. You can choose the suitable firmness by flipping Sweetnight king mattresses..General Note Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion

Price is $667.00

Price: $666.99