A few things regarding the pricing page - firstly, the text underneath the 'Quota' box makes little to no sense to a native English speaker. I cant even offer a translation myself, whcih I would be happy to do, since I don;t understand what you are trying to say.
Secondly, alot of your pricing package details are in very small fractions of GB. It would be easier for people to make comparisons, and thus realise you may be cheaper, if you used megabytes instead, no?