There's a US based seller listed on Amazon.co.uk selling for £35 ($68) - that's the cheapest I can find it here in the UK.
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http://www.amazon.co.uk/gp/offer-listing/1930919301/ref=sr_1_olp_1/202-7026181-3407830?ie=UTF8&s=gateway&qid=1174396914&sr=8-1)
I'm loathe to part with mine now I've seen how the prices have hiked up though... there's a chap on there (also based in the US) selling for £73 ($142)
Those prices are crazy. A few years back I noticed some older VFP books for sale with prices in excess of £100 - not very accessible for those starting out.
Ben Sugden
"Remember to enjoy hunting - and that means relishing the search for the product that has never been advertised or placed handily at the front of the shop; Life begins on the uppermost shelf, avoid guide books and top 10's like the plague." - Ramsey Dukes