Mass import and multiple prices

Hey,
Are here other Belgium users with experience Dolibarr? Is there anny posibility to get maass import with Dolibarr (arround 50.000 lines at one time or more?) and can you set multiple prices? i need 5 different prices. thanks in advance.

Let have a look into dolistore for this free module :

http://www.dolistore.com/lang-en/autres/222-Import-Export-Produit-Multi-Prix-Dolibarr-3-2.html

I dontt have time to do support on this for this moment. But this is also a not free module develop by Altaris, but must be more accurate :

http://www.altairis.fr/article-842-module-de-gestion-des-prix-pour-dolibarr

Regards