How much does this cost to the nearest dollar?

Mould King Dragon Building Blocks with RC and APP Control, Cool Building Bricks Toy with Power, STEM Project Educational Building Set Toys for Adults and Kids 8+(410 Pieces)
The building blocks use mechanical transmission structure, with high-performance motor and smart chip, and support two Bluetooth remote control operation modes handheld remote control and mobile phone app. Can achieve forward, backward, left and right turns, and the tail wings are swayed following the operation. Includes 410 small blocks, all packaged in individual bags with detailed instructions, easy to understanding and building. Not only enjoy the fun of building block toy splicing, but also experience the playing method of electric toys Among the parts is a 400mAh battery block for building. Charging time 90 minutes; Fully charged use time 40 minutes. The

Price is $40.00

Price: $39.99