A Tony Fox appeared on Discogs yesterday for £89 and I would think it was original based on seller (Lee Jeffries), It had dissapeared by this morning before I could press buy!
According to Discogs the most paid for one on there is £120, although there is one for £199 and one for £300 on there for sale.
And of course it has been recently reissued, which I assume based on comments is not legit, as a complete look a like.
There have always been copies around but its been a keeper, and until recently had held its price, it seems to be dropping now. I would pay £100 crisp new notes for one, I would sell it now before £89 is the going rate! However I would think you might get a little more on an open auction.
Bobby Thurston on other hand I would say is very rare, very rarely see it, so wouldn't like to give a price. And to think I had two at one point, one without a cover as it was still covered up when my mate had bought it!
However Bobby Thurston is pretty crap, but as I am feeling incredibly generous I would probably take it off you, as an amazing show of humanity and generousity, for the same £100. I think you again might just get a smidgen more on open auction.
You have some very tasty LP's young man, I would start looking up Porches/Pensions depending on your age.