One of the latest titles to enter pre-pub is "Christ the Stranger: The Theology of Rowan Williams". It's on pre-pub for $19.95, but the print edition retails at $120. That's a saving of $100!
Is an email to Customer Services the best way to let them know they may have grossly over-estimated the retail price, or more likely slipped when typing? The paperback retails for a lot less than $120.
Apologies that the saving isn't quite as amazing as first suggested. Then again, savings rarely are...