
| Month | Total Cost | Price Decreased On | Price Unchanged On | Price Increased On | % Increase for 1 Month | Annualized % Increase Since January 2008 |
| Jan. 9, 2008 | $1,385 | - | - | - | - | - |
| Feb. 6, 2008 | $1,469 | 6 Items | 43 Items | 11 Items | 6.0 % | 72.0 % |
| March 1, 2008 | $1,506 | 0 Items | 47 Items | 13 Items | 2.5 % | 52.4 % |
| April 4, 2008 | $1,515 | 2 Items | 48 Items | 10 Items | 0.6 % | 37.5 % |
| May 2, 2008 | $1,533 | 0 Items | 49 Items | 11 Items | 1.0 % | 32.1 % |
| June 2, 2008 | $1,540 | 2 Items | 53 Items | 5 Items | 0.6 % | 26.9 % |
| July 4, 2008 | $1,549 | 0 Items | 53 Items | 7 Items | 0.6 % | 23.7 % |
| Aug. 9, 2008 | $1,575 | 2 Items | 50 Items | 8 Items | 1.7 % | 23.5 % |
| Sep. 1, 2008 | $1,571 | 2 Items | 55 Items | 3 Items | -0.2 % | 20.1 % |