Certain Walmart products wrongly extract the prices from suggested products or from ads

[SoftVision-CarmenFat]

[Affected versions]:

• Firefox Release v63.0 and up

[Affected Platforms]:

• All Windows
• All Linux
• All Mac

[Prerequisites]:

• Have a Firefox profile with the latest version of the "Price Wise" add-on (8.0.0) downloaded from (download link).

[Steps to reproduce]:

1. Open the browser with the profile from prerequisites.
2. Navigate to the following Walmart website: link.
3. Click on the "Price Wise" toolbar button and add the product on the list.
4. Observe the product's price.

[Expected result]:

• The price is specific to the product's page.

[Actual result]:

• The price is the same for the product's price presented as an ad
  Or
• The price is the same as the first's suggested product price.

[Notes]:

• This issue is reproducible only with the Walmart website.
• This issue is reproducible even after choosing the color and generating the product's price.
• Other products that act the same:

1. link
2. link

• Here is a screen recording of the issue: