Sam definitely played Earl White Jr at Stafford, together with Robin and Adam, and I'm quite sure Dave Thorley too, so a few copies were around at the time. 20 years on though, I think it is a genuinely scarce 45 nowadays, and I can't recall seeing copies on eBay; I've just checked Popsike to find no no copies listed. Having said that, I'm very surprised to see it offered for over a grand..... , but far more "rare" 4 figure 60's 45s are a lot easier to find than Earl White...it's a matter of perspective..
Quality tune though...........