This. It works better than any other option, IMO. In fact, I've been too lazy to turn off my alert, and have probably been alerted by SMS that it's back in stock at least 6-7 times in the last week or so. One of them happened around 4:00 AM in the morning and woke me up. I hit the link on the alert to bring up the Amazon app on my phone, hit 1-click buy on Amazon's site, rolled over and went back to sleep.
So yeah i went check out the SMS thing from zoolert and got a message in 2 minutes from Walmart.com with them in stock if anyone is looking. Thanks for the Protip / Brotip.
Sorry Walmart had
them in stock for a short while but it looks like they are gone again. If you are still looking for sure use zoolert.