Hmm.. I didn't knew that they have one of those useful things...

I got it working great, Invisible Hand doesn't have international capability yet. Hopefully they'll work on that. Cheers!

i have errors authorization on any sites with this addon!

if you shop online regularly, you'll appreciate InvisibleHand. Not only does it save you the hassle of comparing prices, but you get prices you won't find on Google Shopping. Where it really saves you hassle, however is by alerting you to coupons. In my experience, the coupons are much more reliable than what you generally find with a google search.

Seems like recently InvisibleHand added coupons to the toolbar. It is finding me a lot more savings as a result. I saved over $100 during the holidays. Love the new changes.

I removed it.
At one time, this was a very helpful and useful extension but the last few months it has become invasive, attaching itself to way too many windows.
When trying to remove using the x button on a pinned tab, it opens a duplicate tab instead.

I haven't really been doing enough shopping to know if this is truly useful for me or not.However, I am about to rip it out of my system and completely forget about it, since every time I hit the X to go the hell away, it comes back. Extraordinarily annoying when I'm on Google search and my search has nothing to do with shopping at all! Evidently clicking the X causes a refresh of the page, and IH decides it needs to pop up again. This is not good behavior by any measure.

I love this add-on! It has saved me so much money in the year that I have had it. Everybody needs this add-on!!!

Zu wenig deutsche Anbieter, das Addon wurde für den Amerikanischen Markt ausgelegt.

Sehr geiles Addon! Kann ich jedem Empfehlen... Dankeschön

i really love this add on it really comes in handy

It's pretty useful.

Lately the results from the tool have been COMPLETELY inaccurate to the point that it isn't even worth having installed!

It shows other products not the same. I'm checking the price of electrical toothbrush it shows toothpaste. Try price blink it's better.

Addon didn't work with Windows 7 Starter and Mozilla Firefox 17.0.2

A great idea, but it has been a waste of time. There has been only one occasion when the add-on has been useful for me. Otherwise, it has only been a distraction. It almost invariably does not compare like products, or it compares prices between vendors with very different prices for shipping.

Seems to fully support US-UK websites only.
For happy NoScript users: InvisibleHand relies heavily on javascript. Whitelist
a. products-iframe-assets.s3.amazonaws.com
b. products-iframe-assets-api.s3.amazonaws.com
c. productsiframe.invisiblehand.co.uk
d. productsiframe2.invisiblehand.co.uk
for basic functionality and
e. static.chartbeat.com
for "Reviews etc" menu.
You need also to let
a. productsiframe.invisiblehand.co.uk
b. productsiframe2.invisiblehand.co.uk
store cookies on your system.
Enjoy!

Has been most helpful until last couple of days, but now, simple things like DVD price-hunting, up comes, 'Cheaper price found! Buy this for £2.97 at The Hut.com' and when you click on the link, the price was £30-odd AND out of stock. Later the same day, same search, similar silly low price on The Hut, but, again, high price and out of stock.

nice thing...
but isn´t really working in germany.
was searching for a Geforce GTX 560 Ti.
(some URL:http://www.amazon.de/dp/B0051W5WXW/ref=asc_df_B0051W5WXW8652242?smid=A3JWKAKR8XB7XF&tag=googledeprodu-21&linkCode=asn&creative=22494&creativeASIN=B0051W5WXW !! http://www.amazon.de/GigaByte-NVIDIA-GeForce-Grafikkarte-Speicher/dp/B0050MUTUY/ref=sr_1_4?ie=UTF8&qid=1341658993&sr=8-4 !!)
most time the toolbar didn´t even appeared.
you said on your website IH is able to learn. How?

fix it!

this is a fantastic add-on which made me reduce the wastage of time on internet for searching the best hotels & money on flight tickets while i travel which is a more common thing for me as a marketing head. So this could best be ur partner in saving time & money at a time

I tested Invisiblehand on several articles in Germany. I checked one of the best price comparison websites (idealo.de) versus Amazon.de+InvisibleHand. Idealo always gives me up to 10 cheaper articles than amazon.de, InvisibleHand usually don't misses all of them.

I tested Invisiblehand on several articles in Germany. I checked one of the best price comparison websites (idealo.de) versus Amazon.de+InvisibleHand. Idealo always gives me up to 10 cheaper articles than amazon.de, InvisibleHand usually misses all of them.

Example 1: Canon PowerShot S95

13 retailers are cheaper than amazon, InvisibleHand missed them all. Very bad results.

In comparison, the addon "Ciuvo" finds 4 cheaper retailers for this article (still very disappointing though). Globally, "Ciuvo" is better. I didn't test other price comparison addon though.


Example 2: Sony KDL46EX655

5 cheaper retailers on idealo.de. InvisibleHand and Ciuvo missed all of them.

Not sure how I "survived" on-line shopping before Invisible Hand. It works unobtrusively, accurately and quickly. I buy most things on-line, and spend lots of time comparison shopping, so Invisible Hand is JUST what I would have designed if I could do it myself. I will keep using this and recommend it to everyone. Just another reason to always use Firefox--my only browser.

A fantastic add-on which saves me money on a regular basis. It's probably most useful for the everyday items - that are too cheap to for it to be worth your time to check competing prices; the add-on works quietly in the background and only appears when it discovers that the item you are looking at costs less on another site.

Invisible Hand has saved us thousands of dollars over the past four or five years. It's wonderful to have a single tool for comparison shopping in North America and Britain. I particularly appreciate the folks at Invisible Hand ensuring updates are offered so that it evolves along with Firefox. I can't imagine living, or shopping, without Firefox and Invisible Hand.