If you sell on Amazon.com | Amazon FBA you will need this code.
It will tell you what your price is compared to the lowest price selling for a product.

1)Great for updating prices.
2)Great way to tell what your competitor is doing.
3)Fast way to update your price inventory list.

No need for fancy API code.
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All you do is put your Products link files and that's it
You can put any product link you desire it will tell you the current price and lowest price

Code info:
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1) Written in Python 2.7 [ https://www.python.org/ ] (free)
2) Module Selenium [ https://pypi.org/project/selenium/ ] (free)
3) Reads text file and checks prices.
4) No need to pay monthly cost for an expensive software buy once and you are set.