Not everyone plays 8 hours a day to farm gold, runs flashpoints to get the expensive mats for crafting, or plays the GNT stockbroker game. This is a huge credit sink and an unexceptable one.
We should eather get it unlocked at a set legacy level, the level being alot higher for some items ie 20+, OR pay credits NOT BOTH. Currently legacy level is meaningless i'm legacy level 22 and can unlock everything in the game atm except I don't have credits and am not going to farm gold.