I dont know why the price wobbles about so much with Dave - plenty of people on this forum get deliveries for 85, and, i think, one person for 80. You would imagine that picking up from the yard would be at least the same, if not even cheaper, but, alas, its then 25 or so more (for 5 liters less methanol!)
Im in Highwycombe a few times every year, and could easily buy all my methanol from him if it were a case of just going in and handing over cash.