Ken
Book value £12 each I'm afraid. Some of what I've heard on the Carnival label is kack but I really like the one you posted up.
Personally I think a lot of Jamaican R&B is very under rated. Great tracks are Dolly Baby, Patricia, Jenny Lee, Mash It and Running Around (this is a take on More More Doggin by Roscoe Gordon) all by Owen Gray, I Wont Cry by Derrick Harriot, Railroad Track and Boogie In My Bones by Laurel Aitken.
There's lots of good uns out there, I'll try and post a few up in the next few days - maybe not everyones taste but I'll give a few a go and see what you think.