You are allowed to enter at several Deep Web marketplaces using only the links, what determines a tricky situation : inpending clients and dealers can't join the market before they will gtab an alternative link from an previously enrolled shopper.
You can find those at http://deeponionmarkets.com/, it posts active alternative URL to described Deep Web markets. You ought to go to these urls in order to get access to the sites.
If there are some problems with an access,for example, links won’t work, you ought to wait and check for Deep Web marketplaces URL. Carry on, for the reason that some of the marketplaces shut down and launch registrations frequently, based on server load.