There are various stick making sites on the net, some of them good too.
You will be looking around a tenner + a shank
I have the odd thing kicking around from various flavours of shanks to willow, beech,ash and birch burls. Most of which are seasoned, i get them all the time. If you let me know what your after i can see what i can do.
Not the best pic but to give you an idea.