In an economy such as rural Isaan, people have extremely limited income.
They simply cannot buy everything or anything they want.
The good news is there are low cost alternatives so that local people can enjoy the things they like, while being able to afford them.
One example is Dunkin Donuts.
One donut at Dunkin is 32 thb (US $1).
A donut of the same quality and taste is available at the local market for 10 thb (US $0.30)
Buying donuts in the local market affords you 3 donuts for the price of one Dunkin Donut.
The taste and quality of the local donuts is as good as or better than Dunkin donuts.
The local donut vendor also has a greater selection.
If you are on a fixed income, there are ways in Isaan to find lower cost alternatives to get the things you need.