40-50 days. The daily telephone bill for homestays and budget hotels in Thailand is 600 baht, plus the cost of three meals and drinking water. If it is settled in roadside stalls and small shops or 7 1 1 supermarket, you can eat well at 100 baht per meal. If 50,000 baht is normally used in Thailand, it can be used for 40-50 days. Thai baht is the currency of Thailand and is issued by the Bank of Thailand, the central bank of Thailand. 1937. The official price of Thai baht is 2. 17 ~ 2. 18 baht, equivalent to 1 USD.