yeah, but are those comics with DRM?

Because it also says

Lifetime Ownership
Download and keep your eBooks forever.

Instant Delivery
Your eBooks are available to read in minutes.

Multiple File Types
You choose how you want to read your eBooks.

I don't mind if I need IDW app to download drm-free files to my HD. But if those are DRMed, then I'm not interested

You're right.

The FAQ in the IDW app says: "We are no longer offering DRM Free downloads at this time", so it looks like false advertising on Fanatical's part. I wrote to ask them about it, just to be sure, we'll see what they say.

Sure, that's still fine, but first:
It looks like your privacy settings are set to disallow chat messages from "everyone", so please accept the friend request I've sent just now.
I've gotta go do some things right away, but I can buy that comics bundle for you after I get back in some hours (which'll likely be after you go to bed, if you're in Poland, I guess).