Price, cost, charge, fee and fare

Completa los huecos con uno de los siguientes términos, en singular o en plural: price, cost, charge, fee, fare.
1. Are you sure you want to sue your Internet provider? The lawyer's are very pricey.
2. The hotel offers an airport shuttle for an extra .
3. We need to lower our manufacturing .
4. During the sales, everything is at half-.
5. The train to the airport is a rip-off. These things should be regulated!
6. The of living in the UK is higher than in Spain.
7. You can cancel your reservation at no .
8. The registration for a private university are higher than for a public one.
9. We need to take into account the of the works in our flat when we plan this year's budget.
10. You should take out an insurance to pay for the of the repairs.