It is rare, but not that rare - I've had about half a dozen in the last 10 years including two in the last two years, in fact sold to two people on here, most I've ever asked is £125 but I guess that might be slightly on the low side. The singer comes from about 5 miles away from here in Dudley, Rob Pheasant once found a 10" acetate at a boot sale locally containing the two tracks off the single plus an extra, unreleased track.