Discounts (and rip-offs) on my book

My book has a $19.95 cover price.

Since the first day, Barnes & Noble has offered it for $17.95 to their "members."

Amazon.com just lowered the price to $17.95 to everyone. When Amazon offers a discount, it generally means that the book is selling well and they think they can stimulate sales further.

Some dealers are stupidly selling the book for a little bit -- or a lot -- over cover price. I can't imagine why anyone would buy from them.

Langton Info charges $21.94.

A1 Books charges $25.54.

AnyBook charges $29.29.

Tower Books charges $38.99 -- MORE THAN TWICE the Amazon price.

All of these booksellers pay the same price for the book.