Because relying on third party services is also risky, you never know how long they keep on operating for example. Also it may be that these services want a cut for driving traffic to your site. You could cut out this middle man but just offering the service yourself.

But the biggest issue is here that not enough people know of these price alert services. An automatic email for every wishlisted item on sale that you can also turn off and on easily on the site is much more convenient and easier to make than getting notice of a suitable other service, going there and making all the necessary settings.

But it's probably the second best solution and I'm happy to choose it. Many thanks to Exoanthrope for mentioning.

I check the site from my phone browser.

Like the other people have been saying, adding any more strain to GOG'S MacGyver Web structure could break the camel's back.

Spoken like a true marketer and not a programmer. :)

To counter all the points brought to my notice uptil now:

* "They are listening B-B-But they have more important things to do": This wishlist was made around 3 years back and has received 11000 votes. I do not understand how can they be working on things for 3 years and feel this is not important?
They're probably never even browsing the community wishlist section.

* "This will be tough to implement": I'm just a student ATM, but I can think of a very easy way to implement this. "Click to receive e-mail notification if the game is on sale". Whoever has that checked for a particular game gets put into an array. Let another host machines be triggered for games with a sale. Merge list of all games with a sale and scan those arrays. Send emails with all sale games corresponding to the same user. It's really simple but if you still want to argue, 11000 gamers have acknowledged that they want this feature from the past 3 years; countless more would love to have it, so I think it's a pretty big priority for a company who really listens to feedback.

* Lost sales: Infested planet went on sale yesterday, my friend got an email from steam and bought it immediately. I then told him why didn't he buy from GOG. (I always tell peoplo to not become a victim of steam-cancer) He simply replied that he did not get any notification from GOG.
That's one lost sale right there. (this was also the reason I made this post)

Also I think that majority of the gamers don't check each and every game inside the weekly email or even have subscribed to them. Most of my friends including myself haven't subscribed to weekly emails.
We just add games we are interested in wishlist.

Sure, there might be some people who surf GOG pages and Steam pages like facebook or something. But there are TONS who don't.

That would be a great feature, and I don't understand what reasons there could be to not add this feature.

If they can't send an email, it would be nice if the notification system could inform the user that a wishlist game is on sale. But it would have to be a unique notification.

I think it's the "impulse buy" factor, for better or worse. As other(s) have suggested, GOG probably wants you to visit often so you're more likely to buy stuff you wouldn't have otherwise. I don't know if one should view that as kind of "underhanded" or not.

oooooooh are we playing armchair CEO?

I call Howard Schultz!

Yeah looks like a nice idea also GOG already had a Wishlist button on Account Tab why don't just give it a Notification on that one?

If anyone is interested, while we wait for GOG to implement such a feature there are 3rd party alternatives we can use for that purpose.

I wrote some instructions on how to do that with isthereanydeal.com over here: http://www.gog.com/forum/general/games_on_wishlist_email_notification/post14

Enjoy.

We've already waited for 3 years.

So Indeed they are not looking at user convenience?

I really can't be bothered about games which are not on my wishlist. With the limited gaming time I get, I just like to enjoy games I'd really like. This is one of the main reason that steam gets most of my money, because they notify me of the games which are on sale. I'm not going to pay $30 over $10 just to get a DRM-free copy/scan the store every week to see if the games I want are on a sale or not.

The funny thing is that I'm much more of a programmer and still I think that this feature is rather easier than difficult to implement and that they (GOG) obviously do not want to make their customers that happy.

I now have an active waiting list on IsThereAnyDeal.com and all I have to do now is just wait. As a minor punishment for GOG for not implementing the feature so far I will try to resist buying Witcher 3 before I can actually play it. They might loose a buck or two with me now - just to have a real economic effect of not implementing the feature.