Agree with the post AND Blizzard should consider increasing disenchanting values. Currently it’s:
– common: 12.5% of the crafting cost
– rare: 20%
– epic: 25%
– legendary: 25%
– golden common: 12.5%
– golden rare: 12.5%
– golden epic: 25%
– golden legendary: 50%

There’s no good reason that cards don’t DE uniformly for 50%, or, at the very least, 25% of what it costs to craft them. Hope they change it.