I don't see any problems if I look at your page, the head scection code is ok and also the reponse header (200 ok) is ok.
Personal I don't really on such tools on the internet. Try for example HTTRACK to retrieve the page much better error tracking. This is what I get when I retrieve the page through HTtrack:
<HEAD>
<TITLE>Page has moved</TITLE>
</HEAD>
<BODY>
<META HTTP-EQUIV="Refresh" CONTENT="0; URL=index0001.html?option=com_virtuemart%26Itemid=119%26index_php?option=com_virtuemart%26page=shop.product_details%26category_id=37%26product_id=index.php%26flypage=shop.flypage%26vmcchk=1">
<A HREF="index0001.html?option=com_virtuemart%26Itemid=119%26index_php?option=com_virtuemart%26page=shop.product_details%26category_id=37%26product_id=index.php%26flypage=shop.flypage%26vmcchk=1"><B>Click here...</B></A>
</BODY>
Problem lies within virtualmart which is redirecting the page 2 times to another URL..... That is hard to control... Also the Tag Refresh is not advisable for SEO purposes (could be seen as cloaking).
This should be solved within VirtuaMart....
Regards,
Richard