@Myles505, five pieces of advice:-
1. Don't do deals via PM (that is, private messaging) - keep everything on-thread, so you can see exactly what is going on;
2. Don't come straight out and say that you will pay £50 for a jersey. The bottom fell out of the jersey market a while back, which means that you can get one for as little as £15 - so, don't let anyone take all your money.
3. Take your time and choose one you actually want, not just some rubbish someone wants rid of. Anyone offering one to you should post up a proof picture of it;
4.
@Bertz is right - this thread should be in the "Wanted" section;
5. Don't speed post just to get classifieds access.