No such thing as free shipping

I keep a lot of things in the "Buy Later" section of my Amazon.com shopping cart -- it's sort of a secondary wish list for me. Today I added something to that wish list, and got this message:

Important Messages
Please note that the price of HP DeskJet 3740 Color Inkjet Printer has decreased from $37.99 to $37.33 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of Written on the Body has increased from $9.71 to $10.36 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of The Weather of the Heart (Wheaton Literary) has increased from $8.24 to $8.79 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of Penrod and Sam has increased from $14.93 to $21.95 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of Little Town in the Ozarks (Little House) has increased from $5.39 to $5.99 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of New Dawn on Rocky Ridge (Little House) has increased from $6.29 to $6.99 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of On the Banks of the Bayou (Little House) has increased from $5.39 to $5.99 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of Rituals of Dinner, The : Visser, Margaret has increased from $10.85 to $11.56 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of Invisible Cities (A Harvest/Hbj Book) has increased from $9.26 to $9.75 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of How We Think has increased from $8.06 to $8.95 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

Please note that the price of When Words Matter Most : Thoughtful Words and Deeds to Express Just the Right Thing at Just the RightTime has increased from $10.50 to $11.20 since you placed it in your Shopping Cart. Items in your cart will always reflect the most recent price displayed on their product detail pages.

The price of every single book increased. (I could save $2.66 on the printer if I still needed one, though.) Gee, I wonder how they're paying for that new Amazon Prime feature?