Totally agree all your money should be kept in the local economy and most places do have a choice of where to shop a supermarket or from a small one person vegetable and fruit stall .
Lots of trendy healthy people here in Chiang Mai shop on line when there is no need as thete is an abundance of healthy fruit and vegetables packed with all the nutrition one needs .
The money goes direct into,the family budget and they normally need it much more than any supermarket CEO