I've debated quite a bit how to sell these, and I think I've come up with an approach that's as fair as I can afford to be. I'm mainly doing the t-shirts as a way to promote the book--and to give fans a way to support the book and be fashionably awesome at the same time, both during the day and at night. (GLOW IN THE DARK!) The shirts cost me about $13.00 each, total. I'm going to sell them for an introductory price of $20 each, with shipping and handling costing $5 in addition to that ($25 total). I'll have them at signings for $20 (no shipping and handling, obviously).
I'm willing to lop off money for fans. That's right. If you'd like to get the shirts for cheaper, there are two things you can do.
I'll take 4 dollars off if you recommend the book publicly online--however is best for you. This could be on Facebook or Twitter. It could be by emailing a bunch of your friends. You could recommend it via Goodread's "recommend this book" function. You could blog about it. However you choose. Heck--do all of the above. If you've already recommended it, all I ask is that you recommend it once more. A book like mine coming out from a smaller press needs all the help it can get to gain some traction.
I will take off another 3 dollars if you've written a review for it on Amazon, Goodreads, or Barnes and Noble. No need to review it again. :-) And it doesn't have to be a good review. Any honest review will do. I'm not trying to bribe people to write good reviews of the book. More exposure is the goal.
So if you do both, then I'm basically selling the shirt to you at cost. You can also do either/or. Or just pay for the whole thing with no discounts. Shipping will still apply if I have to mail it to you, of course. However, I'll be out in Utah at the end of this month, and I should have the shirts with me. To get the discount, all you have to do is let me know what you've done when you order the shirt (whether in person or online).
To order, just let me know. Twitter works. Facebook. A comment here. An email. A phone call. Tell me in person. Whatever. We'll see how this experiment goes.