Shameless plug!
We sell them in our shop in Rye, East Sussex.
We stock two types one has a fibreglass frame, black graduating to clear handle and black edge. they retail for �11.50.
There is also one with an aluminium frame which is slightly smaller. It is available with five coloured trims and completely clear, retailing for �5.75
Sadly I have not yet uploaded them to our online shop at lovejoys-ltd.co.uk but if you have not yet resolved the problem email me through the site.