I just discovered this service, so it's too soon to say how good it is and how it compares to CCC, but initial impressions are good. While I don't know how accurate the pricing is compared to CCC, it seems similar and I like how much easier it is to access/see the info. One thing I would like to see added is the ability to export and import the add-on's settings.

Recently it always shows “One time anti-bot check
Unable to load reCaptcha from Google. Please verify you can access Google.com unrestricted. We use the reCaptcha service to verify you are human and to block bots from abusing our service.”

How to solve this error?

Great add on if you're an Amazon shopper like me! Easy to use and quickly finds what you're looking for. Giving it 4* as it's been having some issues lately but I guess that's just one of those things for any add on.

Excelente

Very very very useful, but, why you need access to googleapis.com?

A very good Extension and totally useful.

But, I don't give it 5 starts for two reasons:
-Is not translated to Spanish yet (and Spanish is the 3rd used lenguage in the world), I can help to translate strings if is needed from English to Spanish
-Data format support. You can select several US way format, and even you can put your own format. But I totally miss the most common date format in the word: DMY(dd/mm/yyyy) by default, it would be great

Keepa is a very useful tool for a Amazon seller but it didn't work for a long time in Firefox since September. Keepa can work in other browser like google chrome but can't in my firefox. Reset many times, or uninstall and install over and over again, then nothing helps. Would you help me?