We’ve been using this for a while and thought to share since it’s free.
Sign up for these 2 free accounts
2. Uptime Robot
Get the Pushbullet app for your respective phone. Then go into Uptime Robot and set up the alert. Here, we monitor the 10A ESC stock is in, you have to determine what will change, for this page, when stock arrives, they usually remove the words “Time is unforeseen” and put in the price allowing you to add it to cart. So we want to get alerted when “Keyword Not Exisits”. You get the idea…
Product page is at http://www.myrcmart.com/product_info.php?products_id=6994
You can get alerted by email too but we love Pushbullet as it sends an audible alert to the phone and stays in the Notification on our Android phone.
Hobbyking does have a stock alert but from experience, it does not work all the time. Using uptimerobot is a guarantee!