Here is what Jay's favorite stand up comedian says about money matters in Europe. Apparently they are giving U.S. credit cards the ole heave-ho and ATM cards are the way to go:
http://www.ricksteves.com/tms/article.cfm?id=243&extras=false
When in the Dordogne you will want to visit one or two local markets. The markets are often the best place to buy fresh local produce, and most towns are at their best and most colorful on market days.
Note that most markets are significantly larger during the summer months and can become rather less impressive on a rainy day in February!
Below I have listed the days for most of the Dordogne markets. During the summer many towns also have nocturnal markets (marche nocturne) where you can eat, drink and listen to music in a communal atmosphere.
Listed are a few market towns near where we'll be and their market days.
Monday -Les Eyzies
Tuesday -Le Bugue and Tremolat (Our home town homies)
Wednesday -Sarlat and Montignac
Thursday -Domme
Saturday -Sarlat and Montignac