He's opted to charge $0.25 for 30 days' access to the strip, using the BitPass system that Scott McCloud was touting a little while ago. Of course, BitPass requires that you buy a $3.00 prepaid "card" in order to give Patrick his $0.25, and there's precious little else I want to buy with my remaining $2.75, so as far as I'm concerned, I've just spent $3 on this Apocamon installment, and as far as I'm concerned, it was worth it -- I'd pay that much for a comic book this good any day.
On the other hand, I'd own the comic book and be able to read it whenever I want to. Patrick's charging $0.25 or $3.00 (depending on how you squint at it) for 30 days' worth of access to his funnybook. Now, if I could only figure out a way to give Patrick the remaining $2.75 for permanent access (preferably without giving any money to BitPass).