They head distiller from balcones posted on here a while back and my club made a group buy. they were 20L barrels and it worked out to about $55 per barrel shipped. They are very fresh and smell lovely. My first batch is still in there so I can't speak to the flavour contribution. He says he had them regularly. In fact my club is already organizing the next round.
They have three or four regular products and the barrels will have had 1 or 2 types in them at times (they use each barrel for 2 batches before disposing of them) One of the products is a peated whisky though so you might want to check with him about that unless you don't mind the peat.