Yeah i have, not really saved up though, well kinda :)
I was saving up for an 2004 saracen mad (I was 11) and looked in the local paper, found one, it was never used, the boy (Selling it) got it for his birthday, his family payed £600 for it! In the end, i got it for £200!! (Y) My first trials bike, Saracen Mad 2004 and payed £200 for it, i was only 11 :D
Good Bargain, never forget it (Y)