Comixology currently have a deal for 100 independent comics for $10 ($11.45 Aus) on their website.
It's a promotion that ties in with the SXSW Festival. It's an absolute mega-bargain, estimated value of all of the comics is $335 - and amongst these are full graphic novels, not just single issues. Worth it just for Testament, The Bunker, The Mire and The Deep alone. Highly recommended.
Just log in to your Comixology account through the website and pay via Paypal.
Warning: The offer does run out quite soon.
Dupe - https://www.ozbargain.com.au/node/136073