The grands magasins (Printemps, Gal. Fafouillette) carry an extensive amount of the R&G line. I had understood that the price is going to be fixed regardless where you buy it in France, but I hope that I'll be corrected on that.

You can also find a more limited selection of R&G in North America. Glebe Drug in Canada (www.feelbest.com) often has the best price around, though the rising CDN$ hasn't helped much.