The tool itself works fine.
However, Firefox doesn't show me a captcha anymore.
I deactivated all extensions one after the other and found this extension as the source of the error.
Previously, cookies were deleted and cache emptied.

Avoid this kind of extensions that can collect what you are looking on the internet, it's just collecting informations on you to profile you and similar customers to target ads/products/services. That's desguished spyware in counterpart to provide you a pretended nice service.

And just about the service provided: this kind of extensions (lots of similar exist like this one) can modify the webpages on-the-fly and also can censure some parts or search results to guide you to buy to a specific seller instead of a concurrent. And guess who is paying the extension editor to do that?

Mind again before addin browser extensions!

Added it to a new Firefox installation today. Does not show up on any Amazon Smile page I visit. Very disappointing as it worked fine on Chrome.

Sadly as noted by many others, just doesn't work for AU. Clicking the tiny add-on icon just opens up a blank pop-up window with 2 tabs that do absolutely nothing

It doesn't work.

Even when trying products that are best selling. It was recommended to me by a friend and its a shame It doesn't work in firefox

No support for Amazon Australia, pop up page blank on FF browswer

Abandoned 3 yrs ago. No support for Amazon Australia.

nie działa, ciężko usunąć bo dodatek znajduje się w ukrytym miejscu.

does not work for Amazon Australia, will change my rating when it gets an update

Desde hace cosa de 1 mes o dos no funciona...

Can't match any product. Not sure what the point of this is as, once installed, go to a product, click the icon in Address Bar and it always returns Product not Found.

Says not available on your platform on mobile on my laptop and on a desktop so what does it work on and why bother it's not worth the trouble

doesn't work :(

It doesn't work with Amazon on firefox. Price charts don't load. Works fine on Chrome. PLS fix?

Works great in Chrome, but there seem to be issues in Firefox, primarily that price charts don't load and the add-on occasionally uninstalls itself.

It doesn't appear on Firefox as of Nov 11 2019 even after installing. What gives?

Can't find it on my browser. Where is it, no alerts, is it on?

Does not work with Amazon Smile and Firefox.

Worthless if I can't use it, but is a great idea. How 'bout paying attention to your user reviews/ complaints.

Win 7, FireFox 47, Camelizer 2.9.5..... Just get a blank white box when clicking on the icon. I disabled most other extensions but it doesn't help. This started to occur a couple of months back.