I don't know if I should be thanking TrevorWilliams and madth3 or not but these digital comic deals are great. I don't even necessarily like the Transformers but am thinking about siezing up the $15 tier (which is less than $0.14 per comic).

I don't know if it's reasonable to +1 every post in a thread... but I just did.

I'm not even a Transformers fan, but at that price I made it the $15 tier too.

And the freebie onslaught continues.

Batman Eternal #1 is also free on Comixology, use code batman75

I'll completely skip this one since not even the lowest tier is attractive to me, but then, I've managed to not even see any of the movies. Apart from that, it's great that a new publisher appearing in the HB since this bundles are great deals.

I can't speak for the quality of the lowest tier, but I'll point out the info humble bundle provides.
"*Note: Issues #3 and #9 are intentionally omitted due to inclusion of non-Hasbro characters in the original comics."
I don't know how important those issues are, story wise, but that may or may not bug the completionist in you.

As for the rest, "All Hail Megatron" and "Autocracy" appear to be complete.
Source:
http://tfwiki.net/wiki/The_Transformers:_All_Hail_Megatron
http://tfwiki.net/wiki/The_Transformers:_Autocracy
The spotlights are supposed to all be one offs. Maybe more will be added later? (I have no idea.)
http://tfwiki.net/wiki/The_Transformers:_Spotlight

The "More Than Meets the Eye" and "Robots in Disguise" are harder to tell. The first two volumes are apparently complete. (No missing issues.) However there are three more volumes for each series that aren't included here. I don't know how the story leaves off from volume 2 to 3.
http://tfwiki.net/wiki/The_Transformers:_More_than_Meets_the_Eye
http://tfwiki.net/wiki/The_Transformers:_Robots_in_Disguise

This chronological order might help as well:
https://en.wikipedia.org/wiki/The_Transformers_(IDW_Publishing)#Chronological_Comic_Order

I hope that helps answer your question, it's the info I came up with while researching the offer for myself.

Thanks! That helps a great deal. I know I could have researched it myself, but was hoping someone knew the answer offhand. I really appreciate you providing all the info as well as the links. +1.

The PWYW Transformers Classics tier includes 46 issues (since Transformers #3 and #9 are omitted due to inclusion of non-licensed Marvel characters) from the 1984-1991 era Marvel Comics printing of Transformers, that series initially ran for 80 issues so the bundle does not include the full run. IDW published 6 volumes of Transformers Classics (up to issue 80), the last 2 volumes are absent here. Ultimately IDW continued the Transformers generation 1 (Classic) imprint to 100 issues (releasing 20 issues of continuation in mid-2000s). While there are likely many complete story arcs in PWYW it's "missing" issues 3, 9, and 49-100.

In the BTA tier those are complete stories All Hail Megatron is a complete series, as is Autocracy. Transformers: Spotlight is a series of one shot stories (so it's not the complete series, but they're basically standalone issues). All Hail Megatron is considered the "second act" of IDW's Transformers series (following issue 100 of the "classic" canon) intended as a soft reboot and jumping on point for new readers. Autocracy is a prequel to the Transformers line.

Not included but between the canon of BTA tier and the $15 tier is a ~31 issue The Transformers series following All Hail Megatron that these $15 issue series ultimately replaced.

The $15 tier are incomplete series, both recent runs starting from 2013 and continuing today. It's likely they contain several complete story arcs but there are definitely further issues (up to 30 issues in either series).

There are a ton of one-shots and mini series not in the bundle, not sure how those are interwoven or if anything crucial is missing... at a glance it looks like a plush bundle deal with a lot of content even if it's not exhaustive.

Edit: Ninja'ed by Grefin while I went looking, I was curious myself.

Nice, Thanks, Undeadcow, for the further info. Clears things up very nicely.

During this week only (on account of San Diego Comic Con) Marvel Comics is offering a month of unlimited access to it's digital subscription service (Marvel Unlimited) for $0.99. Access Marvel's 15,000 some comics online without restriction and download up to 12 at a time for offline reading.

"Use PROMO CODE SDCC14 when purchasing a monthly subscription to get one month of membership for just 99 cents."

Sign-up: http://marvel.com/mu

I've gotten a few comic bundles from Humble and they've been nice. Perhaps I want more comics. Are there other good sources that are DRM free?

Dynamite and Image Comics (the publishers which started with DRM free stuff in the Humble Bundles) seem to be the way to go, especcially Image Comics has made a stand for DRM free in the press.
I don't know if everything from them is DRM free by now, but maybe they answer to this question.
You can forget Marvel and DC though.

"DRM free" has gotten me into reading comics a few weeks back in the first place.

And the onslaught of big sales continues. My wallet needs life support.

From Marvel, an Avengers sale lasting until 7/27/14.
Avengers (2012+) 1-17
A+X 1-18
https://www.comixology.com/Avengers-by-Hickman-Sale/page/2812

From Top Shelf, and this is going to hurt, also ending 7/27/14, a huge sale on most of their stuff.
147 individual books for ~50% off individually
https://www.comixology.com/Top-Shelf-SDCC-Sale/page/2726
a 172 item bundle for $149.99, 78% off!
https://www.comixology.com/Top-Shelf-Treasury/bundle/759

Store-wise I've been using DriveThruComics. Not everything is DRM free, but all the titles I've personally been interested in so far have been. They do watermark them with your name and purchase number, just in case the comics later show up on torrents or such. But otherwise the files are unrestricted, as long as you avoid the ones that are DRM'd. (Again, I haven't come across any yet in my own areas of interest.)

Anybody knows a place that is not Comixology where I can buy recent Hellraiser comic books? :)
DRM-free would be great if possible.