Hi Dixon and George,
From what I have established from suppliers is that they aren't seasonal but they are only sent out sporadically. A singapore suppler has them but won't ship them to the UK. I believe it is because of the bigger market for them in the east and the fact the uk suppliers won't shell out the initial money for them because they think noone will buy them a the higher prices that LFS would change.
The last ones I bought were about 2.5" and were 55 quid each, no one who doesn't know what they are would buy them as they were pitch black in the LFS.
Dixon,
How much, when, etc?
Rich