Works Great Rated 4 out of 5 stars

When I installed the plugin it wanted to update and hung up. I dont think it was the plug though as much as my old computer. Works great now.

This review is for a previous version of the add-on (1.8). 

Really great add on Rated 5 out of 5 stars

Is play.com supported as it is shown in the screenshot? But doesn't come up in list of retailers.

Very good add on and very useful.

This review is for a previous version of the add-on (1.8). 

Rated 4 out of 5 stars

Does the list of retailers include tech sites such as NewEgg, ZipZoomFly, PriceWatch, etc.?

This review is for a previous version of the add-on (1.8). 

Not A Lot Of Countries Rated 5 out of 5 stars

I think you should add support to Canadian stores/sites.

But anyway it's really seful for those who live in the US or UK

This review is for a previous version of the add-on (1.8). 

Rated 3 out of 5 stars

Sounds extremely useful, but it needs support for more countries. I'm in Denmark, so this is not really useful for me - yet. But it is a truly great idea.

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

Many thanks for this money saving add-on. Works very well for me and have already saved a few quid. Excellent...


This review is for a previous version of the add-on (1.8). 

No option Rated 4 out of 5 stars

Surprised that there is no option. It doesn't work for me. Maybe it is because I am in Canada but in the case that I am on the US site, it again doesn't show anything. However it could be extremely useful.

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

Waiting for Canada Support!

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

Sit's in the background until you need it. Saves you money. It's a no brainer download!

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

Fantastic add-on, works in the background and is completely unobtrusive. You forget it's there until you buy something on-line. It saved me £51 on a Sony E-reader!

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

I'm all up for using anything that can save me a few quid and it quotes up to the minute prices. Love it!

This review is for a previous version of the add-on (1.8). 

Rated 5 out of 5 stars

Fantastic add-on, works in the background and is completely unobtrusive. You forget it's there until you buy something on-line. It saved me £51 on a Sony E-reader!

This review is for a previous version of the add-on (1.8). 

Rated 1 out of 5 stars

it really doesnt work for me. slows browsr down to a CRAWL and there is not real coverage so most of the time so no real offers and oftentimes the difference or saving is about 2c. Which sucks. also it doesn't consider shipping or any other information.

This review is for a previous version of the add-on (1.8). 

Ok Rated 2 out of 5 stars

Works well with popular items, but not so well with unpopular items.

I use it (unashamedly) with our extension to save even more money: cashbackautomator.com.

This review is for a previous version of the add-on (1.7.1). 

Rated 5 out of 5 stars

Working perfectly for me on tons of sites! Saved me over £13 on a PS3 game and over £20 on a DVD boxset, without all that comparison legwork.
Discreet too, nice!

This review is for a previous version of the add-on (1.7.1). 

Never gave me options Rated 1 out of 5 stars

I really wanted this to work but it just does not. It is always gray no matter which site I am on and I am on Amazon all the time looking at very popular items like games, books and simple kitchen items. This has not once shown me a price option. Also I cannot get into the add-on options for this add-on, is it possible? I will leave it just in case it starts to work like I said I really would like it to work. Thanks.

This review is for a previous version of the add-on (1.7.1). 

Rated 1 out of 5 stars

The worst thing about this extension is that when it runs, it locks up Firefox completely, and it can take quite a while to run. Second, its selection of retailers ("over 50") is quite small; this is no substitute for a search engine. Third, it doesn't count shipping charges, which throws off its comparisons, making many of them inaccurate.

This review is for a previous version of the add-on (1.7.1). 

Rated 5 out of 5 stars

Awesome extension, absolutely necessary when buying textbooks. It would be nice if in the future InvisibleHand compared prices for new and used (eg. on Amazon) products and account for shipping prices.

This review is for a previous version of the add-on (1.7.1). 

Rated 5 out of 5 stars

Excellent! It keeps saving me money

Every time I shop for something, it either finds another store which sells it for less, or it reassures me that I've already got the lowest price. It reminds me a little of that Arthur C Clarke quote about how any sufficiently new technology is "indistinguishable from magic"

I guess it's not actual magic, but it's very very clever. I'll definitely be keeping it.

This review is for a previous version of the add-on (1.7.1). 

doesn't work! Rated 1 out of 5 stars

I have tried installing this multiple times in older versions of FireFox and in 3.5.2 which I am currently using on OS X 10.4.11, and it never works. I have never had a price alert come up, and despite the arrow blinking, every time I click on it the pop down bar just says "Invisible Hand doesn't have any suggestions for this page." I have tried it on pages that other people using this addon have had success with.

This review is for a previous version of the add-on (1.7.1). 

It does now

Please accept our apologies. We had a few outages on our US servers earlier in the week which prevented US users from seeing notifications. The problem has been addressed and things should be back to normal. UK users were unaffected.