When Shawn walks over to look at the tennis trophies in the missing player's bedroom, the jewelry box he opens is on the desk. In the next shot, it is replaced by a picture frame. When he reaches for it a moment later, it's back.
The price of the two bottles of Nail Protein Solution is $61.70 ($59.90 + $1.80 tax); this indicates the sales tax is 3%. However, the sales tax in Santa Barbara at the time was 7.75%, so the total cost should have been $64.54 ($59.90 + $4.64 tax).
The photographer re-takes photos of the whole crime scene, including exterior shots, when all that was required was to re-take the photo/photos of the bookcase.