Not a very appealing photo. The light is very strong, and it's too tightly cropped. I would like to see it with a wider aperture (if you can control that) because it would give the photo more depth.
As a stock photo, your appeal is somewhat limited to Cracker Jacks unless you can find another way to sell it. I like the shot ... makes me want to run out and find some Cracker Jacks ... with good exposure and good focus and depth of field.
This is a good photo, but I'm not sure how well it would work for 'stock photography'. Stock photos generally are not specific to brands and don't contain company logos, trademarks, etc... - setzler