Auriana NPC gave the wrong item while buying tomestone item.

I was going to buy an Unidentifiable Shell from Auriana in Revenants Toll. (Talan Mercer, Ragnarok, 24/2, 20:21 server time) I clicked on Unidentifiable Shell and it bought an Encrypted Tomestone instead (the first item in the list). I lost 300 tomestones of poetics and now have an item i don't want. This was NOT an accidental miss click. The two items in questions are FAR apart in the merchant list.