Frankly, if you wait until about 1-2 months before the 6.4 patch, you'll probably find the cost of materials and materia at their nadir before another jump after patch 6.4 when there are recipes that actually require this gear.

Thinking about it now, I wonder if they opted to put in these water otter fountain expert recipes since a complaint I always had was that when the X.3 patch came out, there was no need to rush to make the new crafting gear. By adding those recipes, they do provide a reason - just not a great reason.