You can buy the book:

• On Amazon
• On Amazon Kindle
• Bookshop
• Apple Books
• Smashwords
• IndieBound

Bulk/large quantity purchases:

• Porchlight books (can do individual mailings for print books to your list of addresses)
• Instructions for Kindle group or bulk orders (you put in a list of emails, it takes care of the rest)
• Bookshop
• Amazon allows large quantity orders (select max from book page, then increase quantity at checkout )