How much does this cost to the nearest dollar?

Hydrofarm Convertible Ballast,
Get more ballast for your buck with the SG ballast, which is light on price but heavy on features. Experience the power of a ballast straight out of Hydrofarm’s value line. This ballast is built to last with a patented design that allows electrical contact to happen only when a seal is achieved. The SG ballast offers a compact design, to save space in the grow room, & a water-resistant seal to protect against misting & sprays. All SG ballasts also feature the lock & seal plug system, with recessed contacts to ensure safety during plug-in; a unique, circular prong pattern for secure electrical contact; & a collar that protects against accidental electrical contact. Choose an SG ballast for its capability (120V cord

Price is $172.00
Price: $172.13