I bought mine in October 2008 for £25. They are rather expensive and it depends entirely on the genes of the fish. I've seen some stunning juvi's sold for £30+ and they are magnificent. Then i've seen some for £10 but they were washed out juvi's and really looked quite tatty.
Worth every penny if you can find a good specimen. Anything between £20-30 is an average price TBH. I got an absolute stunner i did
EDIT: My current picture is actually my male EBJD taken in November 2008 when he was 1.5". He cost me £25 as i mentioned. More recent pics of how he matured are in my dempsey journal.