I can't find them in the UK, or at least not easily via google. I found an Irish supplier but no reviews or technical description, just a price of £34 for 155/80x13. Which is very, very cheap over here, I paid much more than that for the same tyre on my Elan a couple of years ago.
I've no objection to cheap
but I think I'd search out a couple of reviews or email the chap in question before buying, just to see how he's getting on with them. It might turn out that they're intended for high mileage/economy rather than grip ?