How much does this cost to the nearest dollar?

Raspberry Pi AD/DA Expansion Shield Board Onboard Sensor Supports Adding High-Precision AD/DA Functions to Raspberry Pi
Description There's no AD/DA function on the Raspberry Pi GPIO interface, this may trouble you in the Pi development. However, it won't be a problem anymore. The High-Precision AD/DA Board allows you to add high-precision AD/DA functions to the Raspberry Pi. Features Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Onboard 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate Onboard 8ch 24bit high-precision ADC (4

Price is $52.00

Price: $52.5