Foreign revenue when compared to expenses in their country are considered in standard.But if you come to Thailand versus their income will be higher than people in Thailand.
Revenue of foreigners compared to the cost in their home country is considered standard , but if compared with the revenue of Thailand, they are much higher than in Thailand.
The income of the foreigners when compared to the cost of their country is in a standard but ้ามา compared with that in their income will be higher than the Thais.