I'd guess the multiplier would be about 3/4 in a nice restaurant in the UK - a house wine may cost £20, with many in the £30/40 range - but the higher end ones would be around £60-80 (with the occasional very expensive one beyond that).
I should add that we live in "The North" (where we eat coal and drink bovril), so prices may be a bit higher down south .
Hay Ian go steady about the coal we had coal fields here in Kent and very proud of them we were.
The
Kent Coalfield was a coalfields located in the eastern part of the English county of
Kent. The Coalfields Trust defines the Kent Coalfield as the wards of Barnham Downs and Marshside in the
Canterbury district, and the wards of Aylesham, Eastry, Eythorne & Shepherdswell, Middle Deal & Sholden, Mill Hill and North Deal in the
Dover district.
[1]
Coal was discovered in the area in 1890 while borings for an early
Channel Tunnel project were taking place and the resultant Shakespeare
colliery lasted until 1915. In 1911, investigation into whether there was coal or not was planned. Six ‘bore holes’ were put down in search of coal (the locations were Rushbourne, Hoads Wood in Sturry, Herne Bay,
Reculver, Chitty (which is near Chislet) and Chislet Park – which is near the future site of Hersden). In the early years many collieries were sunk but failed and the
East Kent Light Railway was built to exploit the anticipated business.
Extensive plans had been drawn up by 1914 for major coal exploitation in east Kent, and the coalfield expanded rapidly in the late 1920s and early 1930s, with its maximum output reached in 1936.
[2] The outbreak of war and disappointing test results eventually resulted in only four collieries surviving:
Betteshanger,
Chislet,
Snowdown and
Tilmanstone. Had coal been more easily accessible, the open, rural landscape of east Kent could have changed beyond recognition.
With the closing of the last of the four Mines in the 1970's this led to the ex miners not finding work and many of the surrounding mining villages having high unemployment even today.