Law school costs are as variable as the costs of undergraduate schools. Costs for the prestigious, private schools will be very high. You can be certain, however, that costs will continue to rise. Yes, but not as generously as undergraduate schools. Most aid consists of guaranteed loans and work study.
Most people come out of law school in debt, quite deeply in debt.
Classes are usually scheduled in the evening, allowing student to work during the day. Admissions standards tend to be just as high. Also, it's a tough grind. The course load is not reduced that much. You really need a strong commitment, but many people do attend law school this way and survive.