all depends on who the lease is through. some car companies will do some great lease deals - other times you will see shops that lease used high end luxury cars and will fuck over the person leasing.
the whole point of a lease is that you pay less for some amount of time (usually 1 year, 3 years, and *maybe* 5 years). then after that time, you give it back to them and they try and sell it as used. so they want it in very good shape and with low miles, so you are usually limited to 10K, 12K, and 15K (miles per year) for those and the some peanalty amount for each mile over that. I've seen as low as $.08 and as high as $.60.
my car is leased (the car I have tends to have great lease deals and in this city the car gets fucked on the roads - twisted, so it is nice to hand in a trashed frame at the end of the term). When I got mine it was going for like $28-34, I don't recall exactly. I had to put just over $3K down and my lease is $399 a month.