Book Of The Day: The New Male Sexuality

I sell 10-20 books a day at http://amazon.com/shops/rewinn. Most days, one stands out for some reason.
This week, it was an order for "The New Male Sexuality".

After I packed it for shipment, an email arrived:
"My husband is excited about receiving this book. Can you send it Priority Mail. I'll pay extra!"

I smiled and upgraded the shipment.

Today I got an email: "Thank you! My husband loves the book."

What could I say in reply?
"You're welcome. Have a great weekend!"

I think they might ...