Per Bangchak's 22 October prices: high-diesel S 43.54 baht/litre, B20 37.19 baht (unchanged), gasohol 91 41.67 baht, E20 35.69 baht. Prices exclude the Bangkok local land tax and take effect at 05:00 the next day. Check the pump price before budgeting fuel for delivery or transport, since stations may differ from the reference price.