My switch has broken off my MP4 were a cheap place to get it mended ?

i got my MP4 for christmas off my grandparents but when i got it the switch has broken. So my dad opened it to have a look and see if he could fix it but when he did it came out and it wont go back on, so he took it to a shop and asked how much would it be to fix it and they said it would cost "40 pounds" but he does not have that money. Do you know were i can get it fixed for less.