Now that I'm home I can check.
I have my cel pictures saved in a "My Pictures" folder in these subfolders:
Cel Scans Altered (Rubberslug Size)
Cel Scans Altered (Tripod Size Thumbs)
Cel Scans Full Size
Cel Scans Larger Redone Tripod Thumbs
Cel Scans Seller Full Size
Cel Scans Seller Rubberslug
Cel Scans Seller Tripod thumbs
...so that everytime I burn my "My Pictures" folder to DVD I'm creating a backup of my cel scans.
Out of the 66 scanned pictures I did and then photoshopped for Rubberslug, 58 were cels and 8 were sketches:
1. Sixty four of my "530 X 392-428" larger size pictures were 77 kb or smaller. I had one that was 83 kb and one that was 84 kb (red scans come out poorly on my scanner so I had to increase the size).
2. Sixty four of my "150 X 114-120" Rubberslug thumbnail size pictures were 10.4 kb or smaller. One was 11.4 kb because of the red problem and another was 22.2 kb because I wasn't using the right photoshop setting to save it.
I went through about fifty cel and sketch scans saving each large and thumbnail photoshopped picture using "Save For Web" for qualities 50, 55, 60, 65, 70 and 75. I flipped back and forth between the photos under a screen resolution of 800 X 600. My conclusion was that it was best for me to save cel/sketch photos at quality of "55".
Often I found a noticeable jump in quality between "50" and "55". Often I found a bigger quality jump between 50 to 55 than going 55 to 75. After doing these comparisons for about fifty pieces, I got tired of doing them and then just saved everything under "55" quality.
Eventually I got too lazy to scan so I only photoshopped seller's pictures. Then I got too lazy to even do that (besides me not wanting to post certain sketches). Lazy, lazy.