How much does this cost to the nearest dollar?

Tesla Coil, 15V 8A Arc Length 10cm / 3.9in Arc Plasma Wireless Transmission Generator with Acrylic Base Shell for Science Experiment
Specification Item Type Coil for Tesla Arc Length Approx. 10cm / 3.9in Material Acrylic Stick Material Beech Color Gold and White Adapter Input US Plug Adapter Output 15V 8A Package List 1 x Coil for Tesla 1 x Base 1 x Power Adapter 1 x Charging Cable 2 x Accessory 1 x Small Screw 1 x Instruction Note 1. Not suitable for people with electronic medical devices 2. Do not touch the arc 3. Please do not use this Tesla coil in the environment of flammable and explosive materials or closed coil and large size metal Exquisite

Price is $84.00
Price: $83.86