Clean up code on 4 pages and add rich snippets

My main reason to come here is to get the rich snippets done but I do have 3 ecommerce websites and admitedly the coding is far from perfect - It seems to appear fine and work ok in the browser but I know it is messy. Most of it done by copying code or making it up as I go along so I figure now is a good time to get that done also. Once I get them done I can clean up the rest using them as a guideline. All are html - with javascript and only 3 I believe have css. I don't think it is a big job for someone who knows what they are doing but time consuming for me to learn so here I am. Small design changes are acceptable if it means a better working page but nothing major. Here are the 4 pages I would like cleaned up and rich snippets added <[login to view URL]> <[login to view URL]> <[login to view URL]> and this is a popup page of one of the items I sell. I am choosing one off the setssimple page <[login to view URL]>