The "Dupe" version (a.k.a. Pang version) of Self-Design suits is only for copying purposes only, so that you can sell the suit of the copied design (from the original version) at your own shop at Lounge Mode (currently not available, and they're working on it). You can't make your design at these suits.



The original version (a.k.a. Ntreev Point version, or commonly use the term "Cash" because it uses real money) of Self-Design suits is the only one you can design at your liking. This one can't be sold via the shop, and that's why the "Dupe" version is there, by copying the design from these version of suits.



So to get one that you can design by yourself, buy Ntreev Points (with your real money, of course) and spend that points to the suits.



Next time, read the description of specific item by right-clicking the item. >.<