Where to buy? Scout Comics currently carries all issues. #1-9 are available. You can visit their site here. Also, check your local comic book shop.
( 4.11.2018 - Hardcover is sold out for the moment. I should have another shipment available in late May.)
Volume 1 Hardcover, Softcover or eBook formats, as well as a variety of other stuff is currently available on BackerKit. You can view the link here.