It's cheap for you to use your own skin. If it's allogenic skin, it's more than 200 yuan per square centimeter, one palm 100 square centimeter. Therefore, it is most important to go to a big hospital to use good medicine for this kind of burn and scald disease, and there is no sequelae after cure.
I recommend you to use some growth hormone, which may be good for skin growth after skin grafting, and it won't cost much.
According to the area you mentioned, if skin is transplanted, some good drugs will be used after skin transplantation, and the total cost is estimated to be less than 50 thousand.
All the medicines in the hospital are state price. What medicine doctors use must be out of consideration for patients, and interests are secondary. Trust your doctor.