2. Among them, iron walnuts and Juzi walnuts are cheap, ranging from tens to hundreds; Walnuts are the most popular now, and the price ranges from several hundred to several hundred thousand.

3. If you want to appreciate in the future and have collectible value, then buy a walnut with a height of more than 4.2 cm and a value of more than 3,000 yuan.

If you just want to play for your dad, just buy one for about 300. If 300 yuan buys kiwi fruit and iron walnut, it will buy a lot. Because it is too small, I can't feel the food in my hand.