It's winter. I am a solar-powered Southerner living in Seattle; I'd rather use what little energy I have on drawing new comics than on shipping stuff.
If you want a copy of the Tarot of the Silicon Dawn, you can get it on Amazon or most other online booksellers.
If you want a copy of Decrypting Rita, I should be doing a Kickstarter for the omnibus (and a small run of book 3 for those who have 1/2) sometime in winter 2015/spring 2016. Keep an eye on the comic's Twitter, Livejournal, Facebook, or its RSS feed. Or follow my twitter/blog/etc (links here). I'm pretty sure I won't shut up about the Kickstarter when it happens.