I've got books filling my shelves day and night....

I've been slacking off a little bit with these.  On July 2nd, I ordered three Doctor Who books from Barnes&Noble, online.  And then today, at a used book store, I bought three more books.  So these are the updates:

Jan 27: 4 books for $49.71, average $12.43 per book.
Jan 30: 4 books for $13.14, average $3.29 per book.
          Total: 8 books for $62.85, average $7.86 per book.
Feb 10: 9 books for $119.25, average $13.25 per book.
          Total: 17 books for $182.10, average $10.71 per book
Mar 03: 2 books for $26.78, avearge $13.39 per book
          Total: 19 books for $208.88, average $10.99 per book
Mar 17: 3 books for $9.97, average $3.32 per book
          Total: 22 books for $218.85, average $9.95 per book.
April 9: 4 books for $28.55, average $7.14 per book
          Total: 26 books for $247.40, average $9.52 per book.
April 15: 2 books for $35.97, average $17.99 per book.
          Total: 28 books for $283.37, average $10.12 per book.
April 28: 3 books for $10.47, average $3.49 per book.
          Total: 31 books for $293.84, average $9.48 per book.
May 18: 3 books for $15.47, average $5.16 per book.
          Total: 34 books for $309.31, average $9.10 per book.
June 10: 3 books for $35.85, average $11,95.
         Total: 37 books for $345.16, average $9.33 per book.
June 17: 1 book for $13.59.
         Total: 38 books for $358.75, average of $9.44 per book.
July 2: 3 books for $35.85, average $11.95.
         Total: 41 books for $394.60, average of $9.62 per book.
July 15: 3 books for 11.59, average $3.86 per book.
         Total: 44 books for $406.19, average of $9.23 per book.

POLT