Once the trade was printed the profits on subsequent issues started to get rolled in to pay off printing / distribution debt. (jimzub.com)
The first issue costs only $ 1.99 while subsequent issues will set you back by just $ 3.99 a month. (goodereader.com)
If you get hooked, you can buy subsequent issues for $ 1.99 each on iTunes, but you'll probably save money if you go for the collected editions ($ 8.99 for vol. (goodereader.com)