Comixology offers downloads of a selection of digital comics for free, as listed below. That’s a savings of up to $2. The titles:

• The Thing (2005-2006) #1 for $0 ($2 off)
• Invincible Iron Man (2008-2012) #1 for $0 ($2 off)
• Daredevil: End of Days #1 (of 8) for $0 ($2 off)
• Bullseye (2017) #1 for $0 (pictured, $2 off)