Amazon Top 50 for the first half of 2013

Here are the top 50 comics from the weekly Amazon Top 50 posts for the first six months of 2013:

1. Diary of a Wimpy Kid 7 (Kindle)
2. The Walking Dead Compendium Volume 2
3. Diary of a Wimpy Kid 7: The Third Wheel
4. The Walking Dead Compendium Volume 1
5. How to Tell If Your Cat Is Plotting to Kill You
6. Diary of a Wimpy Kid 6 (Kindle)
7. Darth Vader and Son
8. Dork Diaries 5 (Kindle)
9. Diary of a Wimpy Kid 6: Cabin Fever
10. Saga Volume 1
11. Diary of a Wimpy Kid 2 (Kindle)
12. Dork Diaries 4 (Kindle)
13. Diary of a Wimpy Kid 5 (Kindle)
14. Vader's Little Princess
15. Diary of a Wimpy Kid 4 (Kindle)
16. The Wimpy Kid Do-It-Yourself Book (revised and expanded edition)
17. Big Nate Makes the Grade (Kindle)
18. Diary of a Wimpy Kid 1 (Kindle)
19. The Walking Dead, vol. 17: Something to Fear
20. Diary of a Wimpy Kid 3 (Kindle)
21. Injustice: Gods Among Us #1 (Kindle)
22. Avatar: The Last Airbender - The Search, Part 1
23. The Walking Dead, vol. 18: What Comes After
24. Dork Diaries 6 (Kindle)
25. The Walking Dead vol. 1 (Kindle)
26. Diary of a Wimpy Kid 5: The Ugly Truth
27. Batman Vol. 2: The City of Owls (The New 52)
28. Diary of a Wimpy Kid 4: Dog Days
29. Hawkeye, Vol. 1: My Life as a Weapon
30. Maus I: A Survivor's Tale: My Father Bleeds History
31. Diary of a Wimpy Kid 8 (Kindle)
32. Dork Diaries 6: Tales from a Not-So-Happy Heartbreaker
33. Persepolis: The Story of a Childhood
34. Batman: The Dark Knight Returns
35. Watchmen
36. Diary of a Wimpy Kid 8
37. Batman: The Killing Joke, Deluxe Edition
38. Dork Diaries 3 (Kindle)
39. Building Stories
40. Dork Diaries 1 (Kindle)
41. Injustice: Gods Among Us #2 (Kindle)
42. Batman Vol. 1: The Court of Owls (The New 52)
43. The Walking Dead, vol. 1: Days Gone Bye
44. My Dog: The Paradox
45. The Walking Dead vol. 2 (Kindle)
46. Big Nate: Genius Mode
47. Injustice: Gods Among Us #3 (Kindle)
48. Injustice: Gods Among Us #12 (Kindle)
49. The Walking Dead, Book 1
50. Fun Home: A Family Tragicomic

Methodology: I took my weekly (compiled on Friday) lists of Amazon Top 50 Comics & Graphic Novels, and for each week assigned a comic a numerical score equal to 51 minus its ranking; e.g. the #1 book got 50 points, the #2 book got 49 points, the #3 book got 48 points, etc., all the way down to the #50 book getting 1 point. I poured everything into a spreadsheet, and voila.

Commentary:

• Normally I only due these compilation Amazon Top 50 posts at the end of the year, but since this year I've been good at keeping up with entering things into my spreadsheet each week, I figured why not take a mid-year peek as well?
• There are some really close entries, and surprisingly at the top of the list where gaps generally tend to be larger. There is only one point separating the #2 & #3 entries, and only one point separating #6 & #7. 
• Nine of the top ten (for that matter, twelve of the top thirteen) have been on the chart for all twenty-six weeks. (The fifth Dork Diaries on the Kindle missed one week.)
• Among traditional comic publishers, Image is clearly the winner with three books in the top ten; Marvel & DC have none. (The rest of the top ten is taken up with books from 'mainstream' book publishers.)
• So far this year, 171 different works have been on the weekly Amazon Top 50 chart at least once.