I'll leave buying it open for a week or two, but I would not mind getting payment later from people I know for certain will pay me. I will also likely order a decent amount extra so that I have copies for those who need to order later.
I honestly have no idea yet. Though after asking my teachers, I can guess about 3-5 dollars each... plus shipping. e___e It'll be a 16 page book in full color. I will probably include free prints and bonus artwork for people who preorder (like a sketch on the autograph page or something) and all preorders will have the cover signed and all that jazz too. I would hope that offsets the cost of mailing it.
I'm still waiting on my quote from the printing company.