Basic script to set up as a cron job to check Microcenter stock of items regularly and put up macOS alerts when item is in stock.

stock_check.sh

#!/bin/bash

itemDescriptions=(
    "Raspberry Pi 4B 8GB"
    "Raspberry Pi 4B 2GB"
    "Raspberry Pi 4B 4GB"
    "Raspberry Pi 400"
)
itemURLs=(
    "https://www.microcenter.com/product/622539/raspberry-pi-4-model-b-8gb-ddr4"
    "https://www.microcenter.com/product/621439/raspberry-pi-4-model-b-2gb-ddr4"
    "https://www.microcenter.com/product/637834/raspberry-pi-4-model-b-4gb-ddr4"
    "https://www.microcenter.com/product/633751/raspberry-pi-400-includes-raspbery-pi-400-with-4gb-ram,-micro-sd-card-slot,-2-usb-30-ports,-1-usb-20-port,-usb-c-power-required"
)

storeNames=(
    "Chicago"
    "Westmont"
)
storeIDs=(
    "151"
    "025"
)

alertMsg=" is in stock at the Micro Center in "

for j in ${!storeIDs[@]}; do
    for i in ${!itemURLs[@]}; do
        curl -s -b "storeSelected=${storeIDs[$j]}" ${itemURLs[$i]} | grep -i "'inStock'" | grep -iq "True"
        if [ $? -eq 0 ]; then
            osascript -e "display notification \"${itemDescriptions[$i]} $alertMsg ${storeNames[$j]}\" with title \"Micro Center In Stock Alert\" sound name \"Hero\""
        fi
    done
done
# */15 10-21 * * *