How much does this cost to the nearest dollar?

Micro SD Card 512GB Micro SD Memory Card 512GB TF Card 512GB Mini SD Card Class 10 high Speed with Adapter for Action Camera, Surveillance and Security Camera
Description Micro SD Card with Adapter --- This device allows you to place the micro SD into the SD card, and use it in any SD card reader or SD media port on a computer, just like normal SD card (✿◠‿◠) Specifications Product Type Micro SD Card with Adapter Package Include 1* 512GB Micro SD Card with Adapter Please Note (✿◠‿◠) ① memory card speed is greatly affected by card reader, adapter, USB port etc. Please don't use cheap card reader to test memory card, low quality card reader will slow down card

Price is $21.00
Price: $20.99