[Map] "Sources for French Oak Barrels" Jan-2013 by Winefolly.com - Most notably, well-made barrels from Alliers, Vosges and Tronçais command the highest prices (upwards of $ 4,000 per barrel). Limousin oak is more loose-grained making it more suited for Cognac, Armagnac, Sherry and whisky aging.