So if I understand correctly your home page displays products from another location in the content tree. What you want to do is display the total products under that other location in the content tree and not just the 3 on the home page. Assuming each of the items in the repeater is a different page type, you could use something like this:
CMS.DocumentEngine.DocumentHelper.GetDocuments(Eval("ClassName")).Path(Eval("NodeAliasPath")).Published().Count