People being hacked since the last Server Check.

The inconvenience of that is more the fact that the item becomes untradeable than the cost of locks. 36k NX is what, 1.4b? A trifle compared to the potential worth of your equips if you get hacked.
But the fact that you can't trade your items for one year, especially with nexon always releasing new items that render old ones obsolete, is a pimento. They should make you have to assign a Pic for your Locked items, and you onlu have once try to enter the pin per day or something. After unlocking it you have the option of relocking it at any time until the lock expires. that's what the locking system SHOULD be like.

It'd only work if the PIC was different than the one used to log in. Otherwise once they get in the PIC is rendered useless.