You can buy you favourite membership at https://memo.cash/token/8e324bd1d6eb510934c472affc200ff213ecef3cc757830712a11a0d4de0126a?for-sale. You need 10 D tokens for a Basic membership.
The membership system is really working and people are not selling their D tokens as fast as they used to do. Now, users are buying D tokens even more often.