How much does this cost to the nearest dollar?

JIAZIJIA Optical Drive Battery Replacement for Lenovo Series Notebook 7.7V 39Wh
Plug & Play Rechargeable Li-ion Battery 7.7V 39Wh Refer to the picture! Please check it! Black 1 year warranty, 30 days' money back guarantee! for Part Number Important Note This is a optical drive/media bay battery to replace the optical drive, NOT the main battery of the laptop. Models (use Ctrl+F to find your model quickly ) Fit for Lenovo Series Not all the compatible laptop models have been listed, please open the back case of your laptop and choose the right battery model according to your laptop's origibal battery. included 1X Battery placing your order, we highly suggest you to open the back case of your latptop

Price is $80.00

Price: $79.99