How old are you? You sound like a kid. Long Travel buggies are very expensive. Getting the car is just the beginning. Actually that is the least expensive part when all is said and done. Just maintenance,repairs and fuel are expenses to be dealt with.
Here's something for you to do. Pick up a Sand Sports magazine and make a list of everything you need to put a buggy together and then you can get most of the costs of everything out of the magazine.You are looking at a minimum of atleast 10 grand for just the motor and transmission. You will be suprised how much more cost effective it is to have a buggy built or even better yet buy a used car.
There are alot of really nice used buggies out there at extremely good price.