It is not necessarily free...cours de français langue étrangère ouverts à tous

Cours de français langue étrangère ouverts à tous,
http://www.sciences.u-psud.fr/fr/formations/service_des_langues/nos_formations/cours_de_francais_langue_etrangere_ouverts_a_tous.html
http://d.hatena.ne.jp/hig3/20080805/1217885436
which means `course of French as a foreign language open to everybody' is not necessarily free. If one is a visiting researcher in Université Paris-Sud, the course fee (about 180€ for a semester) has to be paid by the laboratory he or she belongs to. The payment is made in the form of budget transfer between agencies in the university so that it seems difficult for the reseracher to pay it for himself/herself.