There are about 25 known copies; 1st appearance Lord Snooty by Dudley Watkins; note these are very approximate guide prices and should not be taken as exact values. Sales are constantly monitored and prices updated. If a FINE copy ever surfaced onto the market, a reasonable starting point would be £15,000 and it would probably sell for a lot more!
This is such a difficult comic to value. Copies surface on rare occasions in the Poor, Fair, Good or Very Good grade and it depends on who wants one at the time of sale/auction and what money is around. The gap between a VG copy and a VG+ one is growing I think. The value curve climbs steeply for a VG/Fine and a genuine Fine copy would put it right up there as 'best copy in existence' so should fetch somewhere in the £15,000 in my opinion.
I am however geting the feeling that the excitement for this comic is waning a little unless a spectacular copy turns up. A recent sale of a VG copy with some cover tears at £3,911 including a Buyer's Premium of 10% at Comic Book Postal Auctions in Spring 2014 seemed a bit on the lower end of expectation side. Am I wrong to think that?
Apr 2014 and a Good copy with a significant tear at the top margin leading into a one inch piece out of the letter E in Beano fetched £3,499.99 on ebay UK. Another great find by philcomics.