As has been mentioned several times, no pricing has been established for the service. The fact that they didn't give you a few terabytes of capacity for a free trial shouldn't be that big a surprise. Also, it's pretty obvious, at least to anyone that spends more than a millisecond thinking about it, that 50gigs isn't a chiseled in stone limitation, it's just a figure they picked for the beta. I'm sure that a beta test with that capacity is a valid as one that would have multiples of that capacity, and they don't have people burying their bandwidth uploading their two terabytes of movies and other pirate media.
I'm equally sure that D-Link doesn't need my help, I was expressing my personal opinion of how absurd your criticism of the service was based on the fact that you didn't get enough free capacity.