I haven't purchased one yet, but will be in the next week or two. My current funds came from selling one of my wardrobes that I just didn't wear anymore (I have/had three: normal luxury clothing, gothwear, and EGL) and I sold nearly every bit of the EGL. I also have a very loving, generous boyfriend who helps me out both at Valentines, Anniversary, my Birthday, and Christmas for my major purchases, and whenever he gets a large sum of money in he'll buy me something really nice. My Dad also helps at holidays, plus I work for him a couple times a week and earn money that way typing for his business.
I'm in the same position you are. My parents would NEVER buy me an LV straight out. They are wonderful, perfect, loving parents who are paying for both my sister and I's college education, no scholarships, loans, nothing. Plus my Dad bought me my car and a 3 bedroom house to live in while at college, so I wouldn't dare ask them for a bag, I'd rather just gather the funds myself and buy it. I don't have a job, other than doing work for my Dad :/ I do summer courses all the time and I work my butt off during school, and I just can't juggle job and school at the same time, which is spoiled and terrible I know, but I tend to focus every bit of my energy on one thing at a time, and right now it's college.
It's hard to gather up that much money. It takes time, and I know the only reason I'll be able to buy 2 bags this year plus the 4-5 accessories that I want is because I sold off that huge wardrobe. Next year, I probably will only be able to get one bag a some accessories at holidays.
But think of it this way: once you are graduated and married, with no kids, you have a combined income and the living expenses of just two people, so you will be more capable of purchasing your LVs ^_^