Thanks for the heads-up on these.
I found a NOS pair on American eBay for $6.99 - I'm having them sent to my friend in Cally-forn-eye-ay as the US postage is free and he can send 'em on to me.
The US seller has lots more http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=120994952136