There's sometimes very reasonable LF gear at Wolverhampton, the next fair is 9th December. I picked up a mint 203mm f7.7 Ektar for just under 7 in the Spring, darkslides at 1-2 each on more than one occasion.

Actually LF gear is far cheaper in the US, I've bought quite a number of items from this Forum or the US LF forum, also Ebay - it's worth searchin the .com site as not everything maps across to the UK portal (logins are identical as there's only ine database.

PM or email (on my Profile) with what you're after, and let me know where you're based.