No, don't buy the cheap one, even you are not sure if like thigh high socks. if you buy those cheap thigh high socks, you will never try them again.
Don't buy those cheap thigh socks. Cheap thigh high socks must be short. Usually it is just knee sock, so you need to adjust it all night. High-quality thigh high socks are different. They are 28 inches or longer. If your height is less than 6 feet, then they will be real thigh high!
The cheap thigh socks are very thin. They look black or other colors, but when you put them on your legs you will find that they are almost transparent because they are too thin. High-quality thigh high socks are completely different. They are not only have bright colors, but also keep your thighs warm.
Don't buy the cheap thigh high socks, because high-quality thigh high socks are not very expensive. The most economical way is buy nothing, followed by buying good quality thigh high socks. These socks will make your experiment meaningful.