I couldn't resist at that price. I don't understand why people don't value them more highly; every Mercian I've ridden has felt good. If it had been a vibrant Hetch or Holdsworth Whirlwind it would have been four times as much. Their loss. Some time ago I had Tom Crowthers own Superlight from 1957 (might have been 58), I sold that (I don't know why), and have been looking to replace it ever since but actually the new Superlight is probably surplus to requirements as I have five frames waiting to be built up; but as you say difficult to resist at that price.
1938 RO Harrison Super Circuit, 1949 FH Grubb Cote D'Azur, 1949 RRA, 1949 Paris tdf, 1950 FH Grubb Sprint Omnium, 1950 Olmo, 1951 FH Grubb Perfection, 1951 Rotrax Concours, 1951 Gillott Taper Spearpoint, 1952 Macleans Apollo, I952 RRA, 1952 Gillott FDL, 1952 CB AllRounder, 1953 Freddie Grubb Perfection, 1955 Condor No1, 1956 Condor fb, 1957 Mercian(Dave Keelers), 1957 CB Olympic Sprint, 1959 RA Blackwell, 1961 Rory O'Brien, 1961 Cinelli SC, 1962 Holdsworth Italia, 1963 WBH, 1967 Mal Rees Rameles, 1972 WBH, 1978 Speedwell, 1984 Mercian Tourer.