For a limited time, TGV Europe is offering 300,000 tickets for train
travel across France from just
£12 (€15) each way. This represents a saving of over 30%.

Paris to Lille ... £12 (€15) each way
Paris to Rennes ... £15 (€19) each way
Paris to Strasbourg ... £15 (€19) each way
Paris to Marseilles ... £15 (€19) each way
Paris to Bordeaux St Jean ... £15 (€19) each way
The offer is valid for travel from 18 September to 20 October, but you
must book by 14 September.

Tip: To get the lowest rates, you must be flexible with your dates and
travel outside peak travel times. We found the best availability in
October.

http://www.tgv-europe.com/en/promo/tgvsept08/?autp=TGV-AP-WWen-TGVSept08