I thought Blue Shift was better :P

Yes-yes that maybe. Unfortunately for me the Blue Shift was like an utterly bad map pack with nothing new minus HEV suit fun. This *DLC* was the biggest disappointment for me, well not after the Decay PC port got dumped.

Not even a little bit??? : (

So, do you think developers are going to keep uniquely selling on the Epic store from now on. Or will they still sell on other stores as well?

Given that other stores have a higher cut still, they're not likely to sell for the same price on those stores as the Epic store will they? So do you think it's likely they'll sell their game on several stores, while having it for a lower price on one of them, or more likely they'll simply sell it for the same price on all of them and pocket the extra income from the one that has a lower cut?

For instance, all those developers who were also selling on their own site through the Humble widget which was 5% or something? Did they sell those games for 20%+ cheaper?

Yes I do think that publishers (or self published developers) will continue to sell their products through ALL possible market places including Steam, GOG (after long-long time), Epic and others.
As for the exclusive and costly deals between market and developer they were always here: even we had System Shock 2 and other old goodies as premier digital exclusive on GOG.
A few will definitely lower their prices on EpicStore and proclaim themselves self righteous publishers who think about its customers first and lastly about money gain. I don't believe that Epic will have nothing to do with it but still. And all others will sell their products for the same exact price here and there. I don't see any difference as in console market where AAA-game is sold on different platforms with different fees cut for the same $60 price.
Why are you keep calling them developers? Developers rarely publish their own games except for old legacy games and some other random indie game cases, even the latter require a publisher in most cases (e.g. Dennaton Games to Devolver Digital).
And I don't know about Humble price policy sorry. Selling something cheaper for a time being is a norm be it a sale or special deal with a market place.

I get your point, I normally take the time to write both publisher/developers. It does happen that it's just developers but I agree it's rarer. That's something else entirely. The Humble widget is a simple widget you can put on your *own* website which then leads to a sale portal for Humble. The cut for a sale through that is 95% publlisher/dev, 5% Humble (after payment proc fees). Yet, almost always the prices for games sold like this are the same as on Steam, Humble Store, GOG etc. Hence why I'm using it as an example why I think it's not likely the Epic Store having a lower cut will translate to lower prices for consumers (with the exception of people flaunting it as you already mentioned)

Honestly, going exclusive on Epic is not a valid policy without special incentives. Assuming that there will always be a big gap in the overlap between Epic and Steam users, a point Epic literally boasted about a few weeks ago to attract publishers/developers, third-party publishers/developers will always miss out big time by going exclusive on either platform. Exclusivity for third-party titles only makes sense when the owner of a platform offers special incentives for doing so which is obviously not sustainable on large scale. It was like this with exclusivity on consoles, it will be the same with Epic and Steam.

Yes, it's a fair point. Yes, logically such games should be sold with lowered prices, but who in his right mind will cut the price for one small store when majority sales come from Steam only. Doesn't mean that I agree with such approach, only that I understand why they are greedy.
EpicStore wants to be a major player like Steam, it is no better than its main competitor maybe even worse but a few games were confirmed to have their prices cut, in some some only US prices deducted.
The last example I remember is World War Z:
https://www.pcgamer.com/world-war-z-studio-says-epic-exclusivity-is-the-best-deal-for-players-and-developers/