There was a strip of land for sale near where I work IIRC it was about the same length and half the width and they wanted 5K - I'd imagine the farmer is thinking more like 10-15K.
Why would you think that? It is protected woodland that the OP is buying. He cannot even trim the trees tagged with
Tree Preservation Orders and it must remain woodland, so forget about making a domestic garden there. 2017 prices for UK woodland where as follows:
'...England achieved the highest average price at £5,500/acre, with
Wales at £3,800/acre and Scotland £1,600/acre. Not surprisingly, one of the main determinants of prices is location, with proximity to London or other major centres being crucial, reflecting the amenity component in these prices. The highest prices in the year, in excess of £9,000/acre were achieved in the Home Counties, with Wales and Scotland having far more affordable properties...'
Source
One acre equals 4,047 square metres so about £1.20 per square metre is its current rough value, maybe £2.40 per square metre if it's in a desirable area. Therefore, £2,000 for 65 square metres of protected woodland (£30 per square metre) is very generous. The farmer must be pleased as punch because he is no longer responsible for maintaining a useless piece of land which could carry a legal liability if any of the trees are blown down on to adjacent properties.
A few years ago I knew a bloke who bought an acre of woodland in North Yorkshire for £2,500. He had the bright idea of living there on the cheap. Unfortunately, it didn't work out for him as he got reported to the Council for putting up a tent there after just a couple of weeks and threatened with a big fine. Designated woodland cannot be used for anything other than woodland, hence why it's dirt cheap.