My old pair of jeans had been repaired at least 3 times and finally gave up and split right across the bum. Thankfully I was at home when it happened! I bought a new (to me) pair of jeans last week from a fantastic buy, swap and sell group I am part of on Facebook, I strongly suggest finding out if you have one in your local area.
Unfortunately (as is the case with anything I buy) the legs of the jeans were far too long on me but of course I haz the skillz to um fix that! Uh yeah, here's a tutorial :)