Rated 5 out of 5 stars

This is a very useful add-on. I use it all the time when I don't feel like doing math in my head. Also currencies change every day so this add-on is really indispensible. I would love it even more if it had preferences I could set, like "a dot is a decimal place" and/or "a comma is a thousands separator". And as other reviewers have already mentioned, if it could detect the currency symbol in the page by itself, well then it would be perfect.
Thanks.

This review is for a previous version of the add-on (0.0.0.10).