Try doing a search on Ebay for "driftwood," as well. Theres usually great pics to give you an idea of what your getting.
I recently bought a med/large piece for 7$, shipping was 9$. If I had been fortunate enough to find such a nice piece at my LFS
( a rather expensive fish store only) it probobly would have been 50 bucks or more.
I see beautiful pieces of driftwood from several dealers , at dirt cheap prices compared to locally all the time. HTH