Hi@DataKing99,
You can create one function according to your requirement. Here I am sharing one example based on your dataset.
def fun(price):
    val = price
    if pd.isnull(val):
        return ""
    else:
        return val
data['Price'] = data['Price'].apply(fun)
You will get the below output.
| Distance | 
Price | 
| 0 | 
2 | 
20 | 
| 1 | 
4 | 
40 | 
| 2 | 
7 | 
 | 
| 3 | 
9 | 
90 | 
| 4 | 
10 | 
 | 
You can return any value to replace your NAN according to your requirement.