"what method can be used to place an item in the list at a specific index? "

Alphabetical is an excellent method for organizing an index. By looking at the first letter of an item you can easily find the correct plan in the index. If more than one item has the same first letter, look at the second letter to assign the order.

Some disadvantages to leasing a car is that you are counting on someone to give you money every week or month depending on what you decided and if they don't have all of it well what if you needed that money now you as well have to pay not in full. a disadvantages to purchasing a new vehicle is if it is used then not all the time will absolutely everything work. its almost like a trail and era. although if it is a new car they will try to though all these specials and deals at you in your lease and it can be very overwhelming if you are not use to it.   

Took the words right out of my fingers