Amazon has the 96-Count Pop-Tarts Toaster Pastries (Frosted Blueberry) for $14.33 - 5% off with Subscribe and Save (can cancel at any time) = $13.61 with free shipping. Comes in 12 boxes with 8 pop-tarts each; a single box is normally around $3 or $4.
I have become so addicted to these generic pop tarts they sell at the Sav Alot. Man, it's like diabetic crack.
I bought these, but they weren't compatible with my USB 1.0 toaster. Apparently there are not backwards compatible.