North-South: Having had to pay for the damn things, I was going to say GBP40,000, so your price is realistic. Since you have power and access, then the price should drop to about GBP 24,000. Take niknak's offer - that will cost no more than GBP10,000 by the time it is installed [including several cases of Pommery's best Chateau Ether for niknak].