Question

1. The cost of the car is high.
2. The cost of the car is expensive.

3. The fee is low.
4. The fee is cheap.

5. The bus fare is high.
6. The bus fare is expensive.
--------------
Which ones are grammatical?

Answer 1

The cost of the car is high.
The car is expensive.

The fee is low.
The taxi ride is cheap.

5 and 6 are fine.

Answer 2

5 and 6