I tried to do this at school, made about 100$, but people never really wanted me to do it to there PSP's, some were worried that it would mess up, for some it was too complicated.
PST - Vancouver, BC
I'm only comfortable doing PSPs now because it's soft modding, but when it comes to hardmodding a PS2 or something, that's not my area.
My school had lots of PSP owners, and I made tons of money off of it this year.
$10.