I check pretty much check everyday the ComiXology free comics list.

They have just added 700+ comics to the free list. (Thank you ComiXology and Amazon)

https://www.comixology.com/Free-Comics/page/175

Please use the add all to cart option (I filled the cart manually the first few times, finger got tired clicking and I noticed the button), you will need to do this a few times as there is a 150 item cart limit.

The last title is a pre-order, so it may ask for a payment option if that title is added, just remove it.

Added them all to my pile of shame.