If you don't know how to turn things on and off with tampermonkey don't use this script.
If you don't know how to use the web developer console don't use this script.
If you don't want walmart to potentially ban your IP don't use this script.
If you use this script, walmart will start giving you captcha. Keep that in mind, you've been warned.
If you aren't confortable with simple edits of javascript like changing variable values then don't use this script.