At what store can i get a test for h. pylori? where? for cheap.

To be honest my friend there isn't a store out there that would have an open test available for purchase like that. The only option would either be:

1. Go to your doctors (most obvious one)

or

2. Try homemade remedies to test if you have h.pylori
(Here is a link below that may help you with this, if you choose this step)
https://www.google.com/search?ei=K8izWv34KYPSjwSMxIOACg&q=how+to+test+yourself+for+h+pylori+at+home&...

I hope this was able to help you, have a great day! :)