How much does this cost to the nearest dollar?

Portable Saddle Stool - Make Any Chair a Swinging Saddle Chair - Perfect for Ergonomic Office Chair - Makes A Great Gift for Coworkers and Friends - Comfortable Ergonomic Stool (Black) - by Humantool
Introducing 💺HUMANTOOL ERGONOMIC SADDLE STOOL💺 With Humantool Saddle Chair Cushion you will enjoy all of the benefits of a saddle seat in the chair you are currently using. It is made up of 3 parts; saddle seat with a rotating ball, base and underlay to finally cover any marks to be left on any surface. The ball helps the saddle actively respond to your body’s shifting weight in any direction while the base helps you keep the seat fixed on the soft surface of the chair or floor!

Price is $178.00

Price: $178