How would keeping it in EUR tell you that? That's what MaGOG and, for titles added after the "legacy mode" switch (May 24 2017), searching the price updates thread are for.

Updated the OP.
Thank You.

New Daily Deal:

29.05.2018.
Regalia: Of Men and Monarchs
$13.99 30% off

Ermm is the daily deal broke or just a very lucky loophole, both Regalia of men and monarchs and the royal edition are 30% off as supposed to be but buying them both together was 80% off. I now have the game twice but for 80% off it was a steal.

Yes. the series appears to have an 80% discount.
$8.98 for the both version of the game.

EDIT: There is no discount on the base game at the moment. Only on the Royal edition.

EDIT: Also the buy series discount no longer appears.

Yeah, I managed to get both. Now for me it's listing no sale on the original or bundle but an 80% sale on royal edition.

I used wallet funds to get the bundle that was appeared but has now gone, is there anyway to get them back? I dont mind having two versions of the game but it be nice just to have Royal Edition only.

If you sign out of gog and look at the royal edition listing it's a 30% discount. I think it only shows us 80% because we own it already. You've saved a lot of money through the bundle pricing.

Currently the Daily Deal Banner shows Regalia: Of Men and Monarchs at 30% off, while there is actually no discount on this title.
Only Regalia - Royal Edition is discounted at 30%.

If any Blue is noticing, maybe you would want to fix this.

According to the announcement, the 80% discount should be just for those who own the base game, who'll have this permanent 80% discount to get the Royal Edition, so nothing to do with the daily deal. And the base game was 33% off before, even if from a base of $24.99, while now the base price dropped to $19.99 (but the poorer European countries got added to price hikes too, so I'm seeing $24.69... basically no price drop there then), so a 30% off wouldn't be that much for a daily deal. So guess that the daily deal should really be a release deal for the Royal Edition, and anything else, including the fact that the front page deals listing has the base game's title, would be bugs.

You can buy both and get the 80% discount now, but only for Royal edition.

Because 80% is better than 30%

Even though I put like 40 hours in Regalia I wouldn't recommend it. It's very repetitive, and you run out of things to do very quickly. For each chapter you get a number of quests that needs to be done and if you finish more quests than required they pass on to next chapter. This resulted for me by the time I reached second chapter there were nothing to do just had to sit and wait or spam leveling up people in the city. It's time limited, you have like 30 days for each chapter but you can only skip 1 day at the time which is annoying when you have 20+ days of waiting.

Sorry for the wall of text here but the game really feels unfinished, only thing I liked was the story. As for the gameplay part I would say you have probably seen it all by the time you reach second chapter, there are about 6-7 chapters to play through.

The Sexy Brutale was $3 in one of GOG's 'blind buy' sales where you purchases an item (I think a star) and revealed teh game later - not sure if that technically counts as 'lowest price' but it was a deal for me.