Just go for it.You only live once ,and you will find a way to fund it.I did earlier this year sold two bikes to fund a car boot find.Got ear full at the time but she got over it.SO JUST DO IT.
My first mountain bike was a Raleigh Lizard and one has just come up on Gumtree in my size, but I'm resisting temptation as I really can't justify it. Can I?