Nice job Craig! Clean, easy to navigate and I tested out the shopping cart and clicked on loads of things. I agree with quantum as well as how he worded the possible fix. That lept out at me also when I saw it. I also found another you may want to possibly alter.
"Didn't find what you were looking for? Call us and maybe we can!"
Maybe "we can" what? Sort of leaves ya hangin, ya know? I thought you might have forgotten to include the word "help". That said, if that's the case, I'd keep it positive like quantum says and get rid of the "maybe" and replace it with "we will assist you" or something. Or maybe something to the effect of "If you were unable to find what you were looking for, please call us as we have access to specialty items that may not be included on this site" or something.
Other than that, I'd be extremely pleased to have a site like that. Excellent job brother!
-Danny