The most sanitary option to buying raw meat would be to buy from a store like Lotus’s or Makro and not in the outdoor village market.
Meat is sold by the kilogram (2.20 pounds) here.
US $1 currently equals 32 thai baht so you can see the prices are around US $3 to $6 per kilo (2.2 pounds).
When you can buy pre-cooked/packaged meals in the local market for 40 thb each, the price of meat seems high.
The cost of buying and cooking is often much higher than buying pre-cooked meals, so most locals buy instead of cooking.

